Question

Explain the formation of ozone in the atmosphere.

Answer 1

In the atmosphere, ozone is formed by the action of ultraviolet rays of the Sun on oxygen.

3O_2(g)→ 2O₃(g)

High-energy UV radiation breaks oxygen molecules into oxygen atoms.

O₂ + Far UV → O + O

Oxygen atom reacts with the oxygen molecules to form ozone.

O + O₂→ O₃

Net reaction is

2O₂ + Far UV → 2O₃