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  4. An important product in the ozone depletion by chlorofluoro carbons is

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Q. An important product in the ozone depletion by chlorofluoro carbons is

MHT CETMHT CET 2003Environmental Chemistry

Solution:

Chlorofluoro carbons (CFCs) first undergo photochemical decomposition to give chlorine free radicais $ \, \, \, \, \, CF_2CI_2 \underrightarrow{hv} \underset{CF_2CI}{\bullet} + \underset{CI}{\bullet}$These $\underset{}CI{\bullet} $ free radicais are responsible for the depletion of ozonelayer. $ \, \, \, \, \, \, \, \, \underset{CI}{\bullet} + O_2 \rightarrow \underset{CIO}{\bullet}+O_2$