Chemguide: Support for CIE A level Chemistry

This statement deals with the effect of CFCs on the ozone layer.

Before you go on, you should find and read the statement in your copy of the syllabus.

You will find a detailed account of how CFCs destroy ozone on a page in the Physical Chemistry section of Chemguide about types of catalysis. You will find a section called "The destruction of atmospheric ozone" about 3/4 of the way down that page. You don't need to read the rest of the page for now.

There is one term that you may not have come across before - homogeneous catalysis. This is explained further up the page, but to save you the trouble of finding it, all you need to know is that in homogeneous catalysis, the catalyst is in the same physical state as the reactants. In this case, the catalyst and the reactants are all gases.

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