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
A. To absorb moisture from the gas
B. To absorb the evolved gas
C. To moisten the gas
D. To absorb Cl– ions from the evolved gas.
Answer:A
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
A. To absorb moisture from the gas B. To absorb the evolved gas C. To moisten the gas D. To absorb Cl– ions from the evolved gas.