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Acid rain

Acid rain , also called acid precipitation or acid deposition , precipitation possessing a pH of about 5. In acid-sensitive landscapes, acid deposition can reduce the pH of surface waters and lower biodiversity. It weakens trees and increases their susceptibility to damage from other stressors, such as drought , extreme cold, and pests. In acid-sensitive areas, acid rain also depletes soil of important plant nutrients and buffers, such as calcium and magnesium , and can release aluminum , bound to soil particles and rock , in its toxic dissolved form. Acid rain contributes to the corrosion of surfaces exposed to air pollution and is responsible for the deterioration of limestone and marble buildings and monuments. The phrase acid rain was first used in by Scottish chemist Robert Angus Smith during his investigation of rainwater chemistry near industrial cities in England and Scotland. It was not until the late s and early s, however, that acid rain was recognized as a regional environmental issue affecting large areas of western Europe and eastern North America. As a global environmental issue, it is frequently overshadowed by climate change. Although the problem of acid rain has been significantly reduced in some areas, it remains an important environmental issue within and downwind from major industrial and industrial agricultural regions worldwide. Acid rain.

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Inorganic Reactions Experiment

The fossil fuels that humans burn for energy can come back to haunt us as acid rain.

What is Acid Rain? Acid rain is a result of air pollution. When any type of fuel is burnt, lots of different chemicals are produced. The smoke that comes from a fire or the fumes that come out of a car exhaust don't just contain the sooty grey particles that you can see - they also contains lots of invisible gases that can be even more harmful to our environment. Power stations, factories and cars all burn fuels and therefore they all produce polluting gases. Some of these gases especially nitrogen oxides and sulphur dioxide react with the tiny droplets of water in clouds to form sulphuric and nitric acids. The rain from these clouds then falls as very weak acid - which is why it is known as "acid rain".

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The cause and effect of acid rain

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Pure water has a pH of 7. As is seen in Table I, carbon dioxide CO 2 is present in the greatest concentration and therefore contributes the most to the natural acidity of rainwater. Carbon dioxide, produced in the decomposition of organic material, is the primary source of acidity in unpolluted rainwater. NOTE: Parts per million ppm is a common concentration measure used in environmental chemistry.

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Views: 769

From: Kazim

Added: 29.12.2020

Category: Danish

Tags: acid+rain

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