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填空题
在中学化学实验中学过的可用于分离或提纯物质的方法很多，请将分离或提纯下列各混合物最适宜的方法的名称填入括号内．（1）除去生石灰中混有的石灰石____．（2）除去碘中混有的碘化钾固体____．（3）除去NaCl晶体中混有的氯化铵____．（4）除去KCl固体中混有的MnO2____．（5）从NaCl溶液中提取NaCl____．
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参考解析
解析：
（1）加热煅烧石灰石将分解为氧化钙和二氧化碳，从而达到出去杂质的目的；（2）加热使得碘升华为气体，之后在冷却升华，达到提纯的目的；（3）加热晶体使得氯化铵分解为氨气和氯化氢气体，达到提纯的目的；（4）二氧化锰固体难溶于水，将该混合固体加入水中，过滤掉二氧化锰，可达到分离的目的；（5）蒸发结晶氯化钠溶液，可得到纯净的氯化钠．
（1）加热煅烧石灰石将分解为氧化钙和二氧化碳，从而达到出去杂质的目的；（2）加热使得碘升华为气体，之后在冷却升华，达到提纯的目的；（3）加热晶体使得氯化铵分解为氨气和氯化氢气体，达到提纯的目的；（4）二氧化锰固体难溶于水，将该混合固体加入水中，过滤掉二氧化锰，可达到分离的目的；（5）蒸发结晶氯化钠溶液，可得到纯净的氯化钠．
更多 “填空题在中学化学实验中学过的可用于分离或提纯物质的方法很多，请将分离或提纯下列各混合物最适宜的方法的名称填入括号内．（1）除去生石灰中混有的石灰石____．（2）除去碘中混有的碘化钾固体____．（3）除去NaCl晶体中混有的氯化铵____．（4）除去KCl固体中混有的MnO2____．（5）从NaCl溶液中提取NaCl____．” 相关考题
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