Question

$CFC{l}_3$ is responsible for the decomposition of ozone. Which of the following reacts with ozone to form oxygen?

• A. $\stackrel{\bullet }{Cl}$
• B. $C{l}^{-}$
• C. $C{l}_2$
• D. $F^{-}$

Answer 1

The correct option is A $\stackrel{\bullet }{Cl}$

$CFC{l}_3\stackrel{hv}{\to }\stackrel{\bullet }{C}l+\stackrel{\bullet }{C}FC{l}_2$

Hence, $\stackrel{\bullet }{Cl}$ reacts with $O_3$ through a chain reaction as follows :

$\stackrel{\bullet }{C}l+O_3\to Cl{O}^{\bullet }+O_2$

$\stackrel{\bullet }{C}lO+O\to C{l}^{\bullet }+O_2$.

Hence the correct option is A.