During the preparation of hydrogen chloride gas on a humid day the gas is usually passed through the...........

Chemistry Chapter - 2

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

absorb the evolved gas

moisten the gas

absorb moisture from the gas

absorb Cl– ions from the evolved gas

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Explanation:

Calcium is a good dehydrating agent. It has property to absorb moisture. Hence it is used as a desiccant to dry gases and Hydrocarbons in the industries.