<div class="wx_rich_media_content" id="jsWxContainer"><section style="text-align: center;" nodeleaf=""><span class="wxart_image" wx-style="display:inline-block;width: 505px;height: auto !important;"></span></section><p><span style="font-family: 宋體;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">草酸，不僅存在于植物中，也時常存在于化學試卷上。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><br></span></span></b></p><p><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span></b><b><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">．草酸的弱酸性</span></span></span></b><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></b></p><p><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">室溫下，用</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">0.1 mol·L</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">-1</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">的</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">NaOH</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">溶液滴定</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">25 mL 0.1mol·L</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">-1 </span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">溶液的滴定曲線如圖所示</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">[</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">已知：</span></span></span><i><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span></span></i>_{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">a1</span></span></span>}<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">(H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">) = 5×10</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">?2</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><i><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span></span></i>_{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">a2</span></span></span>}<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">(H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">) = 6×10</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">?5</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">，忽略溶液混合時體積和溫度的變化</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">]</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span></p><section style="text-align: center;" nodeleaf=""><span class="wxart_image" wx-style="display:inline-block;width: 291px;height: auto !important;"></span></section><p><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">a</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">點</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">→b</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">點的化學方程式</span></span></span><u><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">     </span></span></span></u><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p style="vertical-align: middle;"><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">b</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">點</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">c</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">點的化學方程式</span></span></span><u><span style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span lang="EN-US"><span leaf=""><span textstyle="" style="font-size: 16px;">     </span></span></span></span></u><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">b</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">點溶液的</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">pH</span></span><u><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></u><span leaf=""><span textstyle="" style="font-size: 16px;">7</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（填</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">“</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">＞</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">”</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">、</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">“</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">＜</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">”</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">或</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">“=”</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">，下同），</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">[H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">]</span></span><u><span leaf=""><span textstyle="" style="font-size: 16px;">  </span></span><span leaf=""><span textstyle="" style="font-size: 16px;">  </span></span></u><span leaf=""><span textstyle="" style="font-size: 16px;">[C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}^{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}</span>^{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">?</span></span></span>}<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">]</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p style="vertical-align: middle;"><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">當溶液中</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">[Na</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">+</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">] = [HC</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}</span>^{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">?</span></span></span>}<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">] + 2[C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}^{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}</span>^{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">?</span></span></span>}<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">]</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">時，加入</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">NaOH</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">溶液的體積的區間為</span></span></span><u><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">     </span></span></span></u><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p style="vertical-align: middle;"><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">a</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">、</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">b</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">、</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">c</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">三點時水的電離程度由大到小的順序是</span></span></span><u><span style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span lang="EN-US"><span leaf=""><span textstyle="" style="font-size: 16px;">  </span></span></span></span></u><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p style="vertical-align: middle;"><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">a</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">點溶液中，</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">0.1mol·L</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">-1</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">的</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">溶液的電離度為</span></span></span><u><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">   </span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span></u><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span></p><p style="vertical-align: middle;"><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">5</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">）當</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">[</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}</span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">]</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">＝</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">[C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}^{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}</span>^{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">?</span></span></span>}<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">] </span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">時，計算該溶液的</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">pH</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">＝</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">___</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（結果保留二位小數）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p style="vertical-align: middle;"><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">6</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">d</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">點的值約為</span></span></span><u><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">       </span></span></span></u><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（結果保留一位小數）。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p><span style="font-family: 宋體;color: blue;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">答案：（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">+NaOH = NaHC</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;"> + H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">NaHC</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;"> + NaOH = Na</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">+ H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span><o:p></o:p></span></p><p><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">）＜</span></span></span><span style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">＜  </span></span><span style="font-size: 10.5pt;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">25</span></span></span><span style="font-size: 10.5pt;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">50</span></span></span><span style="font-size: 10.5pt;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><o:p></o:p></span></p><p><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">c b a</span></span><o:p></o:p></span></p><p><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></span><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">50%</span></span><o:p></o:p></span></p><p><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">5</span></span></span><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">2.76</span></span><o:p></o:p></span></p><p><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">6</span></span></span><span style="font-family: 宋體;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;color: blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">8.4</span></span></span></p><p><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><br></span></span></b></p><p><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span></b><b><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">．草酸的不穩定性</span></span></span></b><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></b></p><p><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">草酸和草酸鹽受熱易分解。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></p><p><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">）草酸受熱分解，生成物之一是</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">CO</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">，寫出該反應的化學方程式</span></span></span><u><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">   </span></span></span></u><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">將草酸受熱分解產生的氣體進行如下實驗。下列說法正確的是</span></span></span><u><span style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span><span lang="EN-US"><span leaf=""><span textstyle="" style="font-size: 16px;">  </span></span></span></span></u><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">A</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">．用足量的</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">NaOH</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">溶液充分吸收后，可收集得到純凈的</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">CO</span></span><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">B</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">．通過灼熱的氧化銅，若出現黑色變紅色現象，則產生的氣體中一定有</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">CO</span></span><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">．通入足量的澄清石灰水中，若能產生白色沉淀，則產生的氣體中一定有</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">CO</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<o:p></o:p></span></p><p style="vertical-align: middle;"><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">D</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">．通入酸性</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">KMnO</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">溶液中，若能使溶液褪色，說明草酸具有還原性</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><o:p></o:p></span></p><p><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">）實驗室采用下面的方法制備納米鐵粉。反應原理為：</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></p><p><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">I</span></span></span><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">．制備草酸亞鐵：</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">FeSO</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;"> +</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;"> = FeC</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">↓ + H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">SO</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<o:p></o:p></span></span></p><p><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">II</span></span></span><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">．隔絕空氣，把草酸亞鐵粉末在</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">700℃</span></span></span><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">下焙燒，即可得到納米鐵粉。有關的化學反應方程式為：</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">FeC</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;"> = Fe + 2CO</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">↑</span></span></span><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">（條件：加熱）。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></p><p style="vertical-align: middle;"><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">已知：</span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">草酸的</span></span></span><i><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span></span></i><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">a</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">＝</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">5.9×10</span></span></span>^{<span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">－</span></span></span>}^{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span>}<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;"> </span></span></span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">、</span></span></span><i><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span></span></i><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">a</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}</span><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">＝</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">6.4×10</span></span></span>^{<span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">－</span></span></span>}^{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">5</span></span></span>}<span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">FeC</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}</span><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">的</span></span></span><i><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">K</span></span></span></i>_{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">sp</span></span></span>}<span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">＝</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">2.1×10</span></span></span>^{<span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">－</span></span></span>}^{<span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif;"><span leaf=""><span textstyle="" style="font-size: 16px;">7</span></span></span>}<span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">。</span></span></span></p><p style="vertical-align: middle;"><span style="font-family: 宋體;"><span leaf=""><span textstyle="" style="font-size: 16px;">回答下列問題：</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></p><p><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">①</span></span></span><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">有同學對第一步反應能否發生產生了懷疑，請通過計算說明該反應能夠進行到底。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></p><p><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">②</span></span></span><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">該實驗中生成的納米顆粒大小的金屬鐵，在空氣能夠自燃，說明納米鐵在空氣中自燃的原因。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></p><p><span style="mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;mso-bidi-font-family:&quot;Times New Roman&quot;;color:blue;"><span leaf=""><br></span></span></p><p><span style="mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;mso-bidi-font-family:&quot;Times New Roman&quot;;color:blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">答案：（</span></span></span><span lang="EN-US" style="font-family:&quot;Times New Roman&quot;,serif;color:blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">1</span></span></span><span style="mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;mso-bidi-font-family:&quot;Times New Roman&quot;;color:blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family:&quot;Times New Roman&quot;,serif;color:blue;"><span leaf=""><span textstyle="" style="font-size: 16px;">H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;"> = CO↑ + CO</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">↑ + H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span><span textstyle="" style="font-size: 16px;">（條件：加熱）</span></span><o:p></o:p></span></span></p><p><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span></span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">D</span></span><o:p></o:p></span></p><p><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">（</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">）</span></span></span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">①</span></span></span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">對于</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">Fe</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">2+</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;"> +</span></span></span><span lang="EN-US" style="font-family:&quot;Times New Roman&quot;,serif;color:blue;"><span leaf=""><span textstyle="" style="font-size: 16px;"> H</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">C</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;"> = FeC</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;"> + 2H</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">+</span></span>}</span></span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">，</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">K= </span></span></span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">（過程略）</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">=18</span></span></span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">＞</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">10</span></span>^{<span leaf=""><span textstyle="" style="font-size: 16px;">-5</span></span>}</span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">，該反應是可逆反應；由于生成了</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">FeC</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">2</span></span>}<span leaf=""><span textstyle="" style="font-size: 16px;">O</span></span>_{<span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span>}</span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">沉淀，該平衡正向移動，所以反應能夠進行到底。</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></p><p><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">②</span></span></span><span style="color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">生成的納米鐵顆粒小，比表面積大，與氧氣接觸面積大，緩慢氧化釋放的能量達到了鐵的著火點，鐵在空氣就發生了自燃。</span></span></span><span lang="EN-US" style="font-family:&quot;Times New Roman&quot;,serif;color:blue;"><o:p></o:p></span></p><p><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><br></span></span></b></p><p><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">3</span></span></span></b><b><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">．草酸的還原性（略）</span></span></span></b><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></b></p><p><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><br></span></span></b></p><p><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">4</span></span></span></b><b><span style="font-family: 宋體; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;">．草酸或草酸鹽作為沉淀劑的應用（略）</span></span></span></b><b><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><o:p></o:p></span></b></p><p><span style="font-family: 宋體; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><br></span></span></p><p><span style="font-family: 宋體; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;font-weight: bold;">《范汝廣說化學》：</span></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;, serif; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;font-weight: bold;">18101846096</span></span></span><span style="font-family: 宋體; color: blue; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span leaf=""><span textstyle="" style="font-size: 16px;font-weight: bold;">（微信同號）</span></span></span></p><p style="display: none;"><mp-style-type data-value="3"></mp-style-type></p></div><p></p>