Q. 33.9( 30 Votes )

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

B. moisten the gas

C. absorb moisture from the gas

D. absorb Cl- ions from the evolved gas

Answer :

Calcium chloride is a good dehydrating agent. It absorbs moisture or water content from the gas making it dry. Calcium chloride is widely used as a desiccant for drying gases and liquid hydrocarbons in many industries due to its ability to absorb water.

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