Question

# State the harmful effect of Chlorofluorocarbon.

Hint:
(i) Atmospheric pollution can be caused by gaseous pollutants like carbon monoxide, carbon dioxide, sulfur trioxide, sulfur dioxide, nitrogen oxide, nitrogen dioxide etc. In addition to these common pollutants, there are also some specific pollutants such as chlorofluorocarbons or CFC which are ejected into the atmosphere from industrial processes.
(ii) Chlorofluorocarbons or CFCs are partially of fully halogenated hydrocarbons that contain carbon, hydrogen, chlorine and fluorine.

${\text{HCC}}{{\text{l}}_{\text{3}}}{\text{ + 2HF}} \to {\text{HC}}{{\text{F}}_{\text{2}}}{\text{Cl + 2HCl}}$
${\text{C}}{{\text{F}}_{\text{3}}}{\text{Cl}}\xrightarrow{{{\text{hv}}}}\mathop {\text{C}}\limits^{\text{ \bullet }} {{\text{F}}_{\text{3}}}{\text{ + C}}{{\text{l}}^{\text{ \bullet }}} \\ {{\text{O}}_{\text{3}}}{\text{ + C}}{{\text{l}}^{\text{ \bullet }}} \to {\text{Cl}}{{\text{O}}^{\text{ \bullet }}}{\text{ + }}{{\text{O}}_{\text{2}}} \\ {\text{Cl}}{{\text{O}}^{\text{ \bullet }}}{\text{ + O}} \to {\text{C}}{{\text{l}}^{\text{ \bullet }}}{\text{ + }}{{\text{O}}_{\text{2}}} \\ {{\text{O}}_{\text{3}}}{\text{ + O}} \to {\text{2}}{{\text{O}}_{\text{2}}} \\$