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氯化氫是纯净物吗？

返回打印发布时间：2023/5/22 点击：9966

不要将“氯化氫（气体）”与“氯化氫水溶液”混淆，它们是两种不同的物质。

1、氯化氫的化学式为HCl。氯化氫由HCl分子组成。只有一个成分是氯化氫分子（HCl），所以它是一种纯物质。

2、氯化氫溶于水生成氯化氫水溶液，即盐酸，盐酸的成分是氯化氫气体和水（HCl·H2O）。溶质是氯化氫气体，溶剂是水，所以氯化氫水溶液（盐酸）是一种混合物。

氯化氫为什么是纯净物？

氯化氫是由氯化氫分子组成的，只有氯化氫分子，当然是纯物质。纯物质是由单一物质或化合物组成的物质。它的成分是固定的，具有固定的理化性质和特殊的化学符号，可用化学式表示。如氧气O2、铜Cu、二氧化碳CO2、氯化氫HCL。盐酸是氯化氫的水溶液，是一种混合物。

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