Question

Where is the ozone layer found?

Answer 1

Hint: To answer this question we should be aware of formation of ozone and the need of ozone. This will help us remember the whole concept ozone forever. The chemical formula of ozone is ${{O}_{3}}$.

Complete answer:
Ozone is a protective layer in the atmosphere of earth that protects from UV rays that are emitted by the sun. Ozone gas is continuously formed by action of UV rays on molecular oxygen and destruction into molecular oxygen. This phenomenon of formation and destruction of ozone should be balanced because it prevents the entering of UV rays in earth's atmosphere.
-Reaction of formation of ozone:
The oxygen is broken into two monatomic oxygen (oxygen free radicals) in presence of UV rays.
\[{{O}_{2}}\xrightarrow{UVrays}{{O}^{\bullet }}+{{O}^{\bullet }}\]
The monoatomic oxygen obtained in the above reaction reacts with other oxygen gas to give an ozone molecule.
\[{{O}^{\bullet }}+{{O}_{2}}\to {{O}_{3}}\]
-Reaction of destruction of ozone
\[{{O}_{3}}\xrightarrow{UVrays}{{O}_{2}}+{{O}^{\bullet }}\]
There should be a balance between formation and destruction of the ozone layer.
The ozone layer is found in the stratosphere of the earth which does not let UV rays reach the earth surface. If there is no ozone layer the living organisms on earth get exposure to UV rays which damage, destroy the DNA also. In whole the life on earth was affected badly.
Thus, in the above discussion we can come to a conclusion that the ozone layer is found in the stratosphere layer of the earth atmosphere.

Note: There are many layers in earth 's atmosphere, so it is very important to specify the layer in which the ozone layer is formed, the stratosphere. The balance between formation and destruction of the ozone layer is disturbed due to enhancement of the process of destruction by pollutants which leads to ozone depletion.