CFCs are inert in the troposphere and reactive in the stratosphere.

Question

Quizplus · Accepted Answer

CFCs (chlorofluorocarbons) are stable and unreactive in the lower troposphere, where they are released into the atmosphere. However, when they reach the stratosphere, they are exposed to high-energy UV radiation that dissociates the C-Cl bond, releasing chlorine atoms. These chlorine atoms are highly reactive and play a major role in the destruction of the ozone layer.

CFCs Are Inert in the Troposphere and Reactive in the Stratosphere