How is ozone produced in stratosphere?
Ozone layer is formed in the stratosphere by the action of U. V radiations on the atmospheric oxygen. UV radiations causes the splitting or dissociation of molecular oxygen to two oxygen atoms as shown below in the reaction:
O 2 (g) → O (g) + O (g)
Now the oxygen atom combines with other molecular oxygen to form Ozone as shown in the equation below:
O (g) + O2 (g) → O3 (g)