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除去氯化氫气体用什么试剂?

返回打印发布时间：2022/5/5 点击：14172

除去氯化氫气体用什么试剂?除去氯化氫气体用碳酸氢钠溶液（NaHCO3)。氯化氫HCL一般指氯化氫，一个氯化氫分子是由一个氯原子和一个氢原子构成的，是无色有刺激性气味的气体。其水溶液俗称盐酸。学名氢氯酸。相对分子质量为36.46。氯化氫极易溶于水，在0℃时，1体积的水大约能溶解500体积的氯化氫。

除去氯化氫气体为什么要用碳酸氢钠溶液呢？

因为碳酸氢钠会和氯化氫发生反应：

NaHCO3 + HCl ==== NaCl + H2O + CO2↑

不能用氢氧化钠(NaOH),因为NaOH会和二氧化碳反应：

2NaOH + CO2 ==== Na2CO3 + H2O

不能通过水,因为水会和二氧化碳反应：

H2O + CO2 ==== H2CO3

而且通过水也无法去除HCl气体，通过浓H2SO4也没道理,H2SO4只能干燥二氧化碳气体,也无法去除HCl气体.

所以除去氯化氫气体用碳酸氢钠溶液。

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