Question

Write balanced chemcal equations for the formation of acid rain.

Answer 1

Sulphur dioxide + water $\to$ sulphurous acid + hydrogen
$S{O}_2+3H_{2}O\to H_2{SO}_3+{2H}_2$
Sulphur trioxide + water $\to$ sulphuric acid
${SO}_3+H_{2}O\to H_2{SO}_4$
Nitrogen dioxide + water $\to$ Nitric acid + hydrogen
$2{NO}_2+{2H}_{2}O\to 2{HNO}_3+H_2$
As the carbonic acid, formed by ${CO}_2$, is a very weak acid, and the composition of ${CO}_2$in the air is only approximately 0.03%, its effect on our environment is negligible. It is only the man-made compounds of $S{O}_2$, and ${NO}_2$ are the main culprits for acid rain.