Meaning of acid rain 5, what is the definition of acid rain?

Acid rain is acidic precipitation caused by air pollution, often thought of as atmospheric precipitation and carbon dioxide.

The acidity of the gas balance is the natural acidity of the precipitation, and it is used as the criterion for judging whether it is acidified, and when the pH of the precipitation is lower, the precipitation is called acid rain.

Why does precipitation turn sour? This is mainly due to the absorption of atmospheric pollutants by the clouds in the air and the constant reaction within the raindrops to form acidic knots.

Fruit; Acid rain is a serious environmental threat and is known as a "killer" from the air, not only killing forests but also affecting agriculture.

Crop and freshwater aquatic organisms are reduced and killed, and buildings and all facilities exposed to the air are corroded, as well as historical monuments.

It even endangers human health and endangers the ecological balance of the city.

At present, the area polluted by acid rain in China accounts for about 30% of the country's land area, and it is developing at an astonishing rate in some areas, only Sichuan, Guizhou, and Guangzhou.

The direct losses caused by agriculture and forests in the four provinces and regions amounted to 1.8 billion yuan per year; The main cause of acid rain in China is coal-fired as the main energy source.

A large amount of sulphur dioxide pollutants emitted during the consumption process. Therefore, in order to control acid rain pollution, the total amount of sulfur dioxide emissions must be controlled first.

Rain, snow, fog, hail, and other forms of atmospheric precipitation, with a pH less than that, are collectively referred to as acid rain. Acid rain is a manifestation of air pollution.

Acid rain contains a variety of inorganic acids and organic acids, mainly sulfuric acid and nitric acid. Acid rain is produced by a series of reactions in the atmosphere of sulfur dioxide and nitrogen oxides produced during the smelting of coal, oil and metals. The acid dissolves in the rain and descends to the ground to become acid rain.

Due to industrial exhaust gas and automobile exhaust gas, a large number of non-metallic oxides such as sulfur dioxide, nitric oxide, etc., these oxides react with oxygen in the atmosphere to form acidic oxides, which are dissolved in rainwater when it rains, making rainwater acidic. Acid rain is usually defined as acid rain if the pH is less than the pH value.

It is mainly caused by the high amount of sulfur dioxide in the air.

The term acid rain was first coined by the British chemist Smith in 1872 in his book Air and Rainfall: The Beginnings of Chemical Climatology.

Acid rain is the wet deposition in acid sedimentation, which can be divided into two categories: wet deposition and dry deposition, the former refers to all gaseous pollutants or granular pollutants, with rain, snow, fog or hail and other precipitation forms and fall to the ground, and the latter refers to the acidic substances carried by the dust falling from the air on days when it does not rain.

Acid rain is also divided into nitric acid rain and sulfuric acid rain.

Extended Materials. Acid rain in China is mainly sulfuric acid type, and the three major acid rain areas in China are:

1. Southwest Acid Rain Area: It is a serious precipitation pollution area second only to the Central China Acid Rain Area.

2. Acid rain area in central China: It has become the acid rain pollution area with the largest acid rain pollution scope and the highest central intensity in the country.

3. Acid rain area along the coast of East China: Its pollution intensity is lower than that of acid rain area in central and southwest China.

The three major acid rain regions in the world are: Western Europe, North America, and Southeast Asia.

The anions in acid rain are mainly nitrate and sulfate ions, and the main influencing factors of precipitation can be determined according to the concentration of both in acid rain samples, whether sulfur dioxide or nitrogen oxides are the main influencing factors of precipitation. Sulphur dioxide is mainly from the combustion of fossil fuels (e.g. coal), and nitrogen oxides are mainly from pollution sources such as vehicle exhaust.

1. Acid rain refers to rain, snow or other forms of precipitation with a pH less than that. During the formation and fall of rain and snow, sulfur dioxide, nitrogen oxides and other substances in the air are absorbed and dissolved, forming acidic precipitation with a pH lower than that.

2. Usually the pH value is a number between 0 and 14 (concentrated sulfuric acid pH is about -2), at a temperature of 25, when the pH is < 7, the solution is acidic, when the pH is > 7, the solution is pure alkaline, and when the pH = 7, the solution is neutral.

3. However, under the conditions of non-aqueous solution or non-standard temperature and pressure, pH=7 may not mean that the solution is neutral, which needs to be determined by calculating the ionization constant of the solvent under this condition to determine the value of pH as neutral.

The combustion of fossil fuels produces sulfur dioxide into the air, which is easily soluble in water and dissolves in water vapor in the air, forming acid rain, which harms the land and corrodes buildings.

Rain with a pH value of less than 5 is the same as acid rain in the city.

1. Acid rain refers to atmospheric precipitation such as rain, snow, fog, hail and so on with a pH value less than that. It can be divided into two categories: "wet deposition" and "dry deposition", the former refers to all gaseous pollutants or granular pollutants that fall to the ground with precipitation patterns such as rain, snow, fog or hail, and the latter refers to some acidic substances carried by dust falling from the air on days when it does not rain.

2. If it rains for several days in a row, whether it is acid rain depends on his pH value.

3. As for how long it will take to be no sour, it depends on the local pollution situation.

Acid rain is a kind of acidic, which makes people feel stinging when it floats into the eyes, and it will make people feel stung by a small worm when it falls on the **, which is acid rain. Probably, I don't know.

Explanation of acid rain.

Refers to natural precipitation containing a certain amount of acidic substances (such as sulfuric acid, nitric acid, hydrochloric acid), including rain, snow, hail, fog, etc. Acid rain can corrode buildings, damage plants, and pollute water sources. "The People**" :

The coal and oil consumed by industry discharge a large amount of digasified sulfur into the atmosphere, which forms acid rain when cold and falls back to the earth, causing serious pollution. Quebec lakes are polluted by acid rain, mainly due to pollutants falling from the United States, the people said, at a press conference in Montreal yesterday.

The word decomposition of the explanation of acid sour ā like the smell or taste of vinegar : sauerkraut. Sour.

Cranberry. Sweet and sour. Yoghurt.

Jujube. Chemically speaking, it is called a base compound that can produce hydrogen ions in aqueous solution, which is divided into two categories: "inorganic acid" and "organic acid": hydrochloric acid.

Carbonic acid. Nitric acid. Sulphuric acid.

The pH is slippery. Irony of human pedancy: poor and sour.

Shabby. Explanation of 雨 雨 ǔ water droplets falling from clouds: rain.

Rainy season. 雨 ù rain, fall: rain or snow.

Radical : Rain.