A definition and discussion of acid rain

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A definition and discussion of acid rain

A definition and discussion of acid rain

Distilled wateronce carbon dioxide is removed, has a neutral pH of 7. Liquids with a pH less than 7 are acidic, and those with a pH greater than 7 are alkaline. A common example is nitric acid produced by electric discharge in the atmosphere such as lightning.

History The corrosive effect of polluted, acidic city air on limestone and marble was noted in the 17th century by John Evelynwho remarked upon the poor condition of the Arundel marbles. At first the main focus in research lay on local affects of acid rain. Public awareness of acid rain in the U.

S increased in the s after The New York Times published reports from the Hubbard Brook Experimental Forest in New Hampshire of the myriad deleterious environmental effects shown to result from it. These areas all burn sulphur-containing coal to generate heat and electricity.

The use of tall smokestacks to reduce local pollution has contributed to the spread of acid rain by releasing gases into regional atmospheric circulation. An example of this effect is the low pH of rain which falls in Scandinavia.

A definition and discussion of acid rain

Ina group of scientists including Gene Likens discovered the rain that was deposited at White Mountains of New Hampshire was acidic. The pH of the sample was measured to be 4.

Acid rain that mixed with stream water at Hubbard Brook was neutralized by the alumina from soils. Experimental research was done to examine the effects of increased acidity in stream on ecological species. There was a decrease in species diversity, an increase in community dominants, and a decrease in the food web complexity.

Congress passed an Acid Deposition Act. NAPAP looked at the entire problem from a scientific perspective. It enlarged a network of monitoring sites to determine how acidic the precipitation actually was, and to determine long-term trends, and established a network for dry deposition.

It looked at the effects of acid rain and funded research on the effects of acid precipitation on freshwater and terrestrial ecosystems, historical buildings, monuments, and building materials. It also funded extensive studies on atmospheric processes and potential control programs.

From the start, policy advocates from all sides attempted to influence NAPAP activities to support their particular policy advocacy efforts, or to disparage those of their opponents.

Inthe panel of scientists came up with a draft report, which concluded that acid rain is a real problem and solutions should be sought. In Maythe House of Representatives voted against legislations that aimed to control sulphur emissions.

There was a debate about whether Nierenberg delayed to release the report. Subsequent Reports to Congress have documented chemical changes in soil and freshwater ecosystems, nitrogen saturation, decreases in amounts of nutrients in soil, episodic acidification, regional haze, and damage to historical monuments.

Meanwhile, inthe U. Congress passed a series of amendments to the Clean Air Act. Title IV called for a total reduction of about 10 million tons of SO2 emissions from power plants. It was implemented in two phases.Acid rain is rain that has been made acidic by certain pollutants in the air.

Acid rain is a type of acid deposition, which can appear in many forms. Wet deposition is rain, sleet, snow, or fog that has become more acidic than normal. Acid definition, a compound usually having a sour taste and capable of neutralizing alkalis and reddening blue litmus paper, containing hydrogen that can be replaced by a metal or an electropositive group to form a salt, or containing an atom that can accept a pair of electrons from a base.

Acids are proton donors that yield hydronium ions in water solution, or electron-pair acceptors that. Acid rain definition is - rain that has increased acidity caused by environmental factors (such as atmospheric pollutants).

How to use acid rain in a sentence. rain that has increased acidity caused by environmental factors (such as atmospheric pollutants). Acid deposition is when acidic or acid-forming pollutants in the atmosphere deposit on the surface of Earth, and this can occur from any precipitation (such as rain, snow or sleet), but also from.

Acid rain refers to a mixture of deposited material, both wet and dry, coming from the atmosphere containing more than normal amounts of nitric and sulfuric acids. Simply put, it means rain that is acidic in nature due to the presence of certain pollutants in the air due to cars and industrial.

Acid rain is also called acid deposition because this term includes other forms of acidic precipitation such as snow. Acidic deposition occurs in two ways: wet and dry.

Wet deposition is any form of precipitation that removes acids from the atmosphere and deposits them on the Earth’s surface.

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