State how CFCs break ozone layer.

Question

KnowledgeBoat · Accepted Answer

CFCs are decomposed by ultra-violet rays to highly reactive chlorine, which is produced in its atomic form. CF₂Cl₂ (g) CF₂Cl (g) + Cl (g) [free radical] This free radical [Cl] reacts with ozone forming chlorine monoxide. Cl(g) + O₃(g) ClO (g) + O₂ (g) This causes depletion of ozone, and chlorine monoxide further reacts with atomic oxygen to produce more free radicals of chlorine. ClO (g) + O (g) Cl (g) + O₂ (g) Again this free radical [Cl] destroys ozone, and the process continues, giving rise to large scale ozone depletion.

Chemistry

State how CFCs break ozone layer.

Pollution

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