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ICSE Class 10 Chemistry Question 4 of 20

Solved 2022 Semester 2 Question Paper ICSE Class 10 Chemistry — Question 8

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8
Question

Question 1(viii)

Vanadium pentoxide is used as a catalyst in the preparation of:

  1. Nitrogen gas
  2. Nitrogen dioxide gas
  3. Sulphur trioxide gas
  4. Carbon dioxide gas
Answer

Sulphur trioxide gas

Reason — Vanadium pentoxide is used during contact process for the preparation of sulphur trioxide gas.

2SO2+O2⇌450−500°C /1−2 atmosV2O52SO3+45 K cals2\text{SO}_2 + \text{O}_2 \xrightleftharpoons [450-500\text{\degree C }/1 - 2 \text{ atmos}]{\text{V}_2\text{O}_5} 2\text{SO}_3 + \text{45 K cals}