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During the preparation of hydrogen chlor...

During the preparation of hydrogen chlorides gas on a humid day the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloiride taken in the guard tube is to

A

absorb the evolved gas

B

moisten the gas

C

absorb moisture form the gas

D

absorb `Cl^-` ions from the evolved gas

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To answer the question regarding the role of calcium chloride in the guard tube during the preparation of hydrogen chloride gas on a humid day, we can break down the solution into the following steps: ### Step-by-Step Solution: 1. **Understanding the Context**: - Hydrogen chloride (HCl) gas is prepared in laboratory settings, and humidity can affect the purity and efficiency of gas collection. 2. **Identifying the Problem**: - On a humid day, the presence of moisture in the air can lead to the formation of hydrochloric acid when HCl gas comes into contact with water vapor. This can contaminate the gas and affect the reaction. 3. **Role of Calcium Chloride**: - Calcium chloride (CaCl2) is known for its hygroscopic properties, meaning it can absorb moisture from the environment. 4. **Function of the Guard Tube**: - The guard tube containing calcium chloride is used to dry the hydrogen chloride gas. As the gas passes through the guard tube, calcium chloride absorbs the moisture present in the gas. 5. **Outcome**: - By removing moisture, calcium chloride ensures that the hydrogen chloride gas collected is dry and pure, preventing the formation of hydrochloric acid and ensuring a smooth preparation process. 6. **Conclusion**: - Therefore, the role of calcium chloride in the guard tube is to act as a dehydrating agent, absorbing moisture from the hydrogen chloride gas. ### Final Answer: The role of calcium chloride taken in the guard tube is to absorb moisture from the hydrogen chloride gas, acting as a dehydrating agent. ---
To answer the question regarding the role of calcium chloride in the guard tube during the preparation of hydrogen chloride gas on a humid day, we can break down the solution into the following steps: ### Step-by-Step Solution: 1. **Understanding the Context**: - Hydrogen chloride (HCl) gas is prepared in laboratory settings, and humidity can affect the purity and efficiency of gas collection. 2. **Identifying the Problem**: ...
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