A) \[{{\operatorname{CF}}_{2}}C{{l}_{2}}\]
B) \[{{\operatorname{C}}_{7}}{{H}_{16}}\]
C) \[{{\operatorname{C}}_{6}}{{H}_{6}}C{{l}_{6}}\]
D) \[{{\operatorname{C}}_{6}}{{F}_{6}}\]
Correct Answer: A
Solution :
\[{{\operatorname{CF}}_{2}}C{{l}_{2}}\] Freons introduced in the atmosphere from aerosol sprays, in which they act as coolants. \[{{\operatorname{CF}}_{2}}C{{l}_{2}}\xrightarrow{\operatorname{hv}}C{{F}_{2}}Cl+Cl\] \[{{\operatorname{CFCl}}_{3}}\xrightarrow{\operatorname{hv}}CFC{{l}_{2}}+Cl\] The reactive chlorine atoms then destroy the ozone through following sequence of reactions. \[\operatorname{Cl}+{{O}_{2}}\to ClO+{{O}_{2}}\] \[\operatorname{ClO}+O\to Cl+{{O}_{2}}\]
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