Figure 4 8 1 Schematic Diagram of a Wet Scrubber System In coal-burning power plants, SO2 can be removed ("scrubbed") from exhaust gases by its reaction with a lime (CaO) and water spray to produce calcium sulfite dihydrate (CaSO3·2H2O). Removing SO2 from the gases prevents its conversion to SO3 and subsequent reaction with rainwater (acid rain). Scrubbing systems are now commonly used to.. What is acid rain & where does it occur. What causes it. How does it form. Learn its chemical formula, along with effects, solutions, facts, examples, & diagrams.

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. Sunlight increases the rate of most of these reactions.. Download scientific diagram | a A diagram illustrating how acid rain is formed: (1) Emissions of SO2 and NOx are released into the air, where (2) the pollutants are transformed into acid particles.