Question

Describe the chemical reaction occurring in Atmosphere.

Answer 1

In stratosphere, UV light reacts with $O_2$ producing nascent oxygen.

$O_2\left(g\right)⟶20\left(g\right)$

$O_2\left(g\right)+O_2\left(g\right)⟶O_3\left(g\right)$

again, ozone absorbs less energetic UV rays and cleavage occurs, thereby giving $O_2$ and O.

CFC's are also present in atmosphere because of the refrigerant and propellants used . As CFC's are volatile, they do not readily undergo chemical reactions, they persist in the atmosphere for long.

$CC{l}_{3}F\left(g\right)⟶CC{l}_{3}F\left(g\right)+Cl\left(g\right)$

$Cl\left(g\right)+O_3\left(g\right)⟶Cl\left(g\right)+O_2$

$ClO\left(g\right)+O\left(g\right)⟶Cl\left(g\right)+O_2\left(g\right)$

All these reactions occur in the atmosphere.