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氯化氢 - Wikipedia

氯化氢

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氯化氢是由一个原子和一个原子组成的。分子式为HCl

[编辑] 形状

氯化氢是没有颜色而有刺激性气味的气体。它易溶于,在0℃时,1体积的大约能溶解500体积的氯化氢。 氯化氢的溶液酸性,叫做氢氯酸,习惯上叫盐酸


[编辑] 提取方法

实验室制取氯化氢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氢。

\mbox{NaCl}+\mbox{H}_{2}\mbox{SO}_{4(\ \ )}\longrightarrow\mbox{NaHSO}_{4}+\mbox{HCl}\uparrow

在500℃到600℃的条件下,继续起反应而生成氯化氢和硫酸钠

\mbox{NaHSO}_{4}+\mbox{NaCl}\longrightarrow\mbox{NaSO}_{4}+\mbox{HCl}\uparrow

总的化学方程式可以表示如下:

2\mbox{NaCl}+\mbox{H}_{2}\mbox{SO}_{4(\ \ )}\longrightarrow\mbox{Na}_{2}\mbox{SO}_{4}+2\mbox{HCl}\uparrow

氯化氫的水溶液為盐酸

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