高中化学干燥剂 高中化学常用干燥剂，作用及原理
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碱石灰可以干燥氨气、氢气等气体，不能干燥酸性气体，如二氧化硫、氯气等。
氯化钙、硅胶、五氧化二磷等也可以做干燥剂
1浓硫酸不能干燥碱性气体如NH3和还原性气体如H2S、HI等其他都可以
2、碱石灰生石灰氢氧化钠不能干燥酸性气体如CO2等 其他可以
3、氯化钙不能干燥氨气和乙醇 其他都可以4、五氧化二磷不能干燥碱性气体其他均可
自己看吧很全
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