Answer:
It is a reaction of chlorine free radical with ozone.
Explanation:
The reaction of CFC has to do with the the cleavage of a C-Cl in the CFC to release a chlorine free radical having an unpaired electron. This free radical immediately attacks stratospheric ozone releasing chlorine monoxide and reducing the ozone to ordinary oxygen. The process continues as long as free radicals are still being produced in the system.
A summary of the initiation and propagation steps as well as the overall equation of reaction is shown in the image attached
