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style="font-size:14px;vertical-align:baseline;background:none 0% 0% repeat scroll #FFFFFF;color:#333333;font-family:宋體;"> (3)抽濾.用少量無水乙醇洗滌晶體1-2次,得到較純的硫酸鋅晶體。 </p> <p style="font-size:14px;vertical-align:baseline;background:none 0% 0% repeat scroll #FFFFFF;color:#333333;font-family:宋體;"> (4)稱量晶體質量:1.95g.計算產率≈37% (1)燒杯中加入沸石和濾得的晶體,先加少量蒸餾水,后滴加稀硫酸,放入水浴鍋,控制溫度在100℃,再滴加蒸餾水邊觀察固體溶解情況,待固體剛好全部溶解,制得此溫度下硫酸鋅飽和溶液。 </p> </div> <div class="prenext"> <ul><li>上一篇：<a href='/html/2578103531.html' target='_blank' title='硫酸鎂產品簡介'>硫酸鎂產品簡介</a> <span class='ListDate'>2019/3/19</span></li><li>下一篇：<a href='/html/9087563347.html' target='_blank' title='5種制取氯化鋅的不同類型的化學方程式'>5種制取氯化鋅的不同類型的化學方程式</a> <span class='ListDate'>2019/3/19</span></li></ul> </div> </div>  </div>  </div>  <div class='clearfix'></div> </div>  </div>  <div class="HeightTab clearfix"></div>  <div class="ct" id="bmf3">  <div id="dark_footer_wrap"> <div id="dark_footer"> <div class='box_240px_right'> <p><img src='/images/QRCode.png' width='120' 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