Acid Rain 4

Acid rain pain As scientists and so - called "disciplines" of so - called environmental experts differ in many problems, the public is easily lost in that it is the truth and media hype. The term "acid rain" has appeared in our society since the early 1970s, but many people do not know what it causes for our environment and the adverse effects of acid rain. What is more confusing than all facts surrounding acid rain and scientific theory is the development of appropriate solutions to reduce air pollution leading to acid rain.

Acid rain is a precipitate containing high concentrations of sulfuric acid, nitric acid and nitrous acid. This term is commonly used to refer to rain, snow, sleet and hail including thick acid. Acid rain is a serious problem in North America and Europe, especially urban areas. The acidity of the material was measured using the pH scale, and the number 7 was the neutral acidity. Substances with a pH below 7 are acidic, while substances with a pH above 7 are basic. Normally, pH 6 is used as a criterion for identifying acid rain. Acid rain is therefore defined as rainfall that exceeds uncontaminated rainfall where acidity is expected. Any precipitate having a pH below 6 is regarded as an acid precipitate. In some places, a pH of 2 to 3 is recorded. By contrast, the pH of vinegar is 4.

Acid, usually nitric acid and sulfuric acid are released from the atmosphere to form a precipitate, acid rain precipitates. This brings the pH of the precipitate below the normal level. Acid rain is mainly caused by human influence on the earth, but there are also some natural sources. About two thirds of sulfur dioxide and one quarter of nitrous oxide are released into the atmosphere by combustion of fossil fuels such as coal, oil and natural gas. Acid rain occurs when these chemical contaminants react with oxygen and water vapor in the air to form nitric acid and sulfuric acid. These acids can be combined directly with the precipitation of their sources. However, they usually follow the prevailing wind and return to the ground through acid rain hundreds of miles away.