如何在合成实验室中快速制备HCl气体?

浓硫酸+固体氯化钠

这种方法可以快速得到持续相对大量的HCl气体,适合用于需要持续通入HCl气体的反应,如Pinner反应通常在无水溶剂中(如,苯,氯仿,硝基苯,二氧六环等),在0℃下通入干燥的氯化氢气体反应。操作也非常方便,只需要将浓硫酸缓慢滴加到氯化钠固体上,生成的HCl气体,再通入浓硫酸干燥即可得到干燥的HCl气体。可以通过滴加速度来调节,出气量。制备得到的HCl气体可以直接用于反应,也可以通入冷却的各种溶液中制备所需要的HCl溶液。小编也随便画了一下草图,仅供参考。

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