How acid rain is formed?

Answer 1

Acid rain is caused mainly by sulphur and nitrogen emissions from the burning of fossil fuels such as coal and oil in power plants, industrial boilers and car engines. They combine with water vapour, sunlight and oxygen in the atmosphere to create a diluted 'acid soup' which is washed out of the atmosphere by rain, snow crystals or as dry particles, polluting the air and causing untold damage to trees and buildings.

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Answer 2

The Formation of Acid Rain

The process that results in the formation of acid rain generally begins with emissions into the atmosphere of sulfur dioxide and nitrogen oxide. These gases are released by automobiles, certain industrial operations (e.g., smelting and refining), and electric power plants that burn such fossil fuels as coal and oil. The gases combine with water vapour in clouds to form sulfuric and nitric acids. When precipitation falls from the clouds, it is highly acidic, having a pH value of about 5.6 or lower. (The term pH is defined as the negative logarithm of the hydrogen ion concentration in kilograms per cubic metre. The pH scale ranges from 0 to 14, with lower numbers indicating increased acidity.) At several locations in the eastern United States and Western Europe, pH values between 2 and 3 have been recorded. In areas such as Los Angeles, San Francisco, and Whiteface Mountain in New York, fog is often 10 or more times as acidic as the local precipitation.























(from pictures) the formation of Acid Rain

by:mkg

Answer 3

As we pollute the air, carbon-dioxide gets trapped in the clouds so that the moisture that we call rain becomes acidic.