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Question
When hydrogen chloride gas is prepared 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:
Options
Absorb the evolved gas
Moisten the gas
Absorb moisture from the gas
Absorb Cl– ions from the evolved gas
MCQ
Solution
Absorb moisture from the gas
Explanation:
Guard tube drys (absorbs water) from calcium chloride on a humid day.
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Similarities and Differences Between Acids and Bases
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