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Question
In order to prepare dry hydrogen chloride gas in a humid atmosphere, the gas produced is passed through a guard tube (drying tube) which contains ______.
Options
Calcium chloride
Calcium oxide
Calcium hydroxide
Calcium carbonate
MCQ
Fill in the Blanks
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Solution
In order to prepare dry hydrogen chloride gas in a humid atmosphere, the gas produced is passed through a guard tube (drying tube) which contains calcium chloride.
Explanation:
A drying tube filled with calcium chloride (CaCl2) is used to prepare dry hydrogen chloride gas because it is a strong drying agent that absorbs moisture without interacting with HCl.
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