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
(a) absorb the evolved gas
(b) moisten the gas
(c) absorb moisture from the gas
(d) absorb Cl^– ions from the evolved gas

Correct Answer: (d) absorb Cl^- ions from the evolved gas.

Explanation: Calcium chloride is used as an absorbent in the guard tube as it can absorb the moisture present in the air.

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Updated on: 10-Oct-2022

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