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盐酸和氯化氫的区别

返回打印发布时间：2022/10/22 点击：10989

盐酸和氯化氫的區別
1、本质不同

氯化氫是气体；盐酸是氯化氫的水溶液和混合物。浓盐酸只含有氯化氫。氯化氫是一种纯净的共价化合物，具有很强的腐蚀性，但在没有水的情况下没有那么强的腐蚀性。

2、构成不同

由氯化氫分子组成；盐酸由水分子、氢离子、氯离子和少量氢氧根离子组成。氯化氫是一种无色、不可燃的气体，具有极强的刺激性气味，比重高于空气。遇到潮湿空气会产生白雾，易溶于水产生盐酸。

3、化学键不同

氯化氫是共价键，盐酸是离子键。盐酸，俗称盐酸，是氯化氫气体的水溶液，一种无色透明的强酸。盐酸的挥发性极强，所以当你打开一个装有浓盐酸的容器时，可以看到上面有白雾，这其实是氯化氫揮發和空氣中的水蒸氣結合産生的一小滴鹽酸。純鹽酸是一種無色液體，在空氣中起霧(因爲揮發性強)，有刺鼻的酸味，而粗鹽酸因含有雜質三氯化鐵而呈黃色。

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