Q3Multiple choice
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
Show answer
(c) absorb moisture from the gas