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鹽酸是純淨物還是混合物？

返回打印发布时间：2023/7/7 点击：10201

鹽酸是混合物。盐酸是氯化氫气体的水溶液，溶液是至少两种物质的均匀、稳定的混合物，无论是盐酸还是盐酸溶液都是氯化氫和水的混合物。盐酸按溶液中浓度可分为稀盐酸和浓盐酸。

盐酸简介：

盐酸是氯化氫（HCl）的水溶液，是一元无机强酸，具有广泛的工业用途。盐酸的性状为无色透明液体，有强烈的刺激性气味，有较高的腐蚀性。浓盐酸（质量分数约为37%）极易挥发，所以当盛有浓盐酸的容器打开时，氯化氫气体就会挥发，与空气中的水蒸气结合，产生细小的盐酸液滴，从而出现酸在瓶口上方。盐酸是胃酸的主要成分，能促进食物消化，抵抗微生物动物感染。

工业革命期间，盐酸开始大量生产。在化学工业中，盐酸有许多重要的应用，对产品的质量起着决定性的作用。盐酸可用于酸洗钢材，也是大规模制备许多无机和有机化合物所需的化学试剂。

如氯乙烯，PVC塑料的前体。盐酸还有许多小规模用途，例如家庭清洁、明胶和其他食品添加剂的生产、除垢剂以及皮革加工。全球每年生产约2000万吨盐酸。

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