During the preparation of hydrogen chloride g | vedclass

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(C) Calcium chloride $(CaCl_2)$ is a well-known dehydrating agent or desiccant.When hydrogen chloride $(HCl)$ gas is prepared,it may contain water vap

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absorb moisture from the gas

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(C) Calcium chloride $(CaCl_2)$ is a well-known dehydrating agent or desiccant.When hydrogen chloride $(HCl)$ gas is prepared,it may contain water vapor,especially on a humid day.To obtain dry $HCl$ gas,it is passed through a guard tube containing anhydrous calcium chloride.This substance absorbs the moisture (water vapor) present in the gas,ensuring that the resulting $HCl$ gas is dry.

During the preparation of hydrogen chloride gas on a humid day,the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to

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