Question

Arrange the following process of formation of H₂SO₄ on the planet Venus in the sequence of occurrence.

I.The reaction of Sulphur dioxide with atomic oxygen to form Sulphur trioxide.

II.Sun's photochemical action on carbon dioxide to form carbon monoxide and atomic oxygen.

III.The reaction of Sulphur trioxide with water to form sulphuric acid.

• A. II, I, III
• B. III, II, I
• C. II, III, I
• D. I, II, III

Answer 1

The correct option is A

II, I, III

Sulphuric acid is produced in the upper atmosphere of Venus by the Sun's photochemical action on carbon dioxide, sulphur dioxide, and water vapour. The process takes place in the following order:

1.Conversion of carbon dioxide into carbon monoxide and atomic oxygen in the presence of UV.

2.The reaction of SO₂ with atomic oxygen to form SO_3.

3.The reaction of SO₃ with water vapour to form H₂SO_4.