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实验室中常用食盐浓硫酸反应制取氯化氫

返回打印发布时间：2013/6/28 点击：15879

实验室中对于氯化氫气体的研究，是为了生产中更好的操作运行。那么在实验室中我们该如何制备出所需量的氯化氫气体呢？下面简单跟大家介绍一下实验室提取氯化氫的操作步骤：

    氯化氫提取方式：
    实验室制取氯化氫一般是用食盐和浓硫酸起反应，不加热或稍微加热，生成硫酸氢钠和氯化氫。
    NaCl+H2SO4→NaHSO4+HCl↑
    在500℃到600℃的条件下，继续起反应而生成氯化氫和硫酸钠。
    NaHSO4+NaCl→Na2SO4+HCl↑
    总的化学方程式可以表示如下：
    2NaCl+H2SO4→Na2SO4+2HCl↑
    氯化氫的水溶液为盐酸（HCl）。

在实验室操作中，虽然所得氯化氫气体是很少量的，不會對操作者造成太大的身體傷害，但是因其易溶于水，且溶于水後形成強腐蝕性的鹽酸，操作人員還是要盡量避免直接的皮膚接觸，以免灼傷。

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