Question

pH of acid rain is sometimes as low as 2 explain

Answer 1

Normal, clean rain has a pH value of between 5.0 and 5.5, which is slightly acidic. However, when rain combines with sulfur dioxide or nitrogen oxides—produced from power plants and automobiles—the rain becomes much more acidic.

Answer 2

Explanation:

The oxides of nitrogen and sulfur are present in the air or atmosphere. When rain falls then nitrogen oxide and sulfur oxide dissolve in rain water.

Since these oxides are acidic in nature and when they dissolve in rain water then the rain water also becomes highly acidic in nature.

Therefore, due to this reason pH of acid rain is sometimes as low as 2.