How does rain acid form

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

Acid rain forms when compounds like nitrogen oxudes and/or sulfur dioxide rise into our atmosphere and mix (and react) with water, oxygen, and other chamicals to produce acid rain.