One kind of acid rain forms when which chemical compound from coal-fired power plants combines with water vapor in the air?

A) nitrogen oxides
B) sulfur dioxides
C) sodium hydroxide
D) calcium carbonate
E) aluminum oxide

Acid Rain

Low-pH rain that forms when sulfur dioxide and nitrogen oxides mix with water vapor in the atmosphere.

Sulfur Dioxides

Sulfur dioxide (SO2) is a toxic gas with a pungent, irritating smell, released by volcanoes and industries, and contributing to acid rain.

Nitrogen Oxides

Compounds formed by the reaction of nitrogen and oxygen gases in the air during combustion, especially at high temperatures.