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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
  • a)
    absorb the evolved gas
  • b)
    moisten the gas
  • c)
    absorb moisture from the gas
  • d)
    absorb Cl ions from the evolved gas
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
When hydrogen chloride gas is prepared on a humid day, the gas is usua...

To understand the role of calcium chloride in the guard tube when preparing hydrogen chloride gas on a humid day, let's break down the process and the properties of calcium chloride:
1. Preparation of Hydrogen Chloride Gas:
- Hydrogen chloride gas is usually prepared by reacting a metal chloride with a strong acid, such as sulfuric acid.
- The reaction can be represented as: Metal chloride + Sulfuric acid → Hydrogen chloride gas + Metal sulfate
2. Humidity and Moisture:
- On a humid day, the air contains a significant amount of moisture or water vapor.
- Moisture can interfere with the preparation of hydrogen chloride gas by affecting the purity and concentration of the gas.
3. The Role of Calcium Chloride:
- Calcium chloride is a highly hygroscopic compound, meaning it has a strong affinity for water and readily absorbs moisture from the surrounding environment.
- When hydrogen chloride gas is passed through the guard tube containing calcium chloride, the calcium chloride serves the following purposes:
- Absorbing Moisture from the Gas: The calcium chloride in the guard tube absorbs moisture from the hydrogen chloride gas, preventing it from interfering with the purity of the gas.
- Drying the Gas: By removing moisture from the gas, calcium chloride helps to ensure that the hydrogen chloride gas obtained is dry and free from water vapor.
- Protecting the Apparatus: Absorbing moisture with calcium chloride prevents the formation of corrosive acids that can damage the apparatus used in the preparation of hydrogen chloride gas.
Therefore, the correct answer is C: absorb moisture from the gas.
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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 toa)absorb the evolved gasb)moisten the gasc)absorb moisture from the gasd)absorb Cl–ions from the evolved gasCorrect answer is option 'C'. Can you explain this answer?
Question Description
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 toa)absorb the evolved gasb)moisten the gasc)absorb moisture from the gasd)absorb Cl–ions from the evolved gasCorrect answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about 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 toa)absorb the evolved gasb)moisten the gasc)absorb moisture from the gasd)absorb Cl–ions from the evolved gasCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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 toa)absorb the evolved gasb)moisten the gasc)absorb moisture from the gasd)absorb Cl–ions from the evolved gasCorrect answer is option 'C'. Can you explain this answer?.
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