Explain how a small amount of chlorofluorocarbons can destroy a large amount of ozone. Small amount of chlorofluorocarbons can destroy a large amount of ozone Because the released halogen is a catalyst, a single CFC molecule can cause the destruction of many ozone molecules. [ While the ozone is constantly being replenished by other natural processes, the rate of depletion in the presence of large amount of CFCs is faster. this is why many countries have limited the production

The chlorine in chlorofluorocarbons is broken from the molecule by ultraviolet radiation. The free chlorine then combines with an oxygen atom from ozone, leaving an oxygen molecule and forming chlorine monoxide. Free molecules of oxygen can displace the chlorine in chlorine monoxide, leaving chlorine free to break up another molecule of ozone. One chlorine atom can destroy up to 100,000 ozone molecules.

Because the CFC acts as a catalyst. One CFC molecule destroys one ozone molecule, and then moves on and destroys another one and so on. It keeps at it until it gets destroyed itself, and that is something that takes a lot of time.

Or

The degradation of ozone in the upper layers of the earth's atmosphere is catalyzed by CFC and cloud particulate, it does not get consumed in the degradation. Meaning after one molecule of CFC degrades an ozone molecule, the CFC is regenerated and can degrade another one.