Question

how are acid rains caused

Answer 1

Explanation:

The main chemicals in air pollution that create acid rain are sulfur dioxide (SO2) and nitrogen (NOx). Acid rain usually forms high in the clouds where sulfur dioxide and nitrogen oxides react with water, oxygen, and oxidants. this mixture forms a mild solution of sulfuric acid and nitric acid.

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Answer 2

Explanation:

It is caused due to accumulation in air of SO2, CO2 , NO2 etc which reacts with rain water or moisture in air to produce H2SO4, H2CO3, HNO3 which makes the pH of rain water less than 4.5 which is considered as acid rain .