Homework Help: chemistry

Posted by tina on Thursday, February 25, 2010 at 4:06pm.

I have absolutely no clue how to approach this question please help.

The destruction of the ozone layer is an issue that is being discussed all around the world. Freons, or chlorinated hydrocarbon molecules, are very stable on the ground, but in the upper atmosphere, ultraviolet radiation can free chlorine atoms from these molecules. The freed chlorine atoms can then react to destroy the ozone in the following steps. Step 1 Cl + O3 → ClO + O2 Step 2 ClO + O → Cl + O2 Explain how the chlorine atoms act as a catalyst in this reaction.

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