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Q.
The main constituent(s) of acid rain is/are
Environmental Chemistry
Solution:
The main constituents of acid rain are $H _{2} SO _{4}$ and $HNO _{3} . SO _{2}$ and $NO _{2}$ after oxidation and reaction with $H _{2} O$ are major contributors of acid rain, because polluted air usually contains particulate matter that catalyse their oxidation.
$2SO_2 (g) + O_2(g) + 2H_2O(l) \rightarrow \underset{\text{Sulphuric acid}}{2H_2SO_4(aq)}$
$4NO_2(g) + O_2(g) + 2H_2O(l) \rightarrow \underset{\text{Nitric acid}}{4HNO_3(aq)}$