Chapter 11, Problem 11.74PAE

Interpretation Introduction

Interpretation:

It should be explained with reasons whether light acts as a catalyst in the process by which CFCs contribute to the depletion of stratospheric ozone.

Concept introduction:

A catalyst is an agent which involves in increasing the rate of a reaction by providing an alternative way for the reaction with lower activation energy and without being used up.

Process of depletion of ozone layer:

$\begin{array}{l}Step\text{1: }C{F}_{2}C{l}_2+h\upsilon \to C{F}_{2}Cl+C{l}^{•}\\ Step2:C{l}^{•}+O_3\to Cl{O}^{•}+O_2\\ Step3:Cl{O}^{•}+O_3\to C{l}^{•}+2O_2\end{array}$