How did acid rain come about? 500 Words Science Quiz

There is more sulphur dioxide in the air.

Chemical reaction process of acid rain formation:1) Acid rain is mostly due to the combustion of fossil fuels

Coal containing sulphur is burned to produce sulphur dioxide.

S+O2=Ignite SO2

Sulfurous acid is formed by the interaction of sulphur dioxide and water.

so2+h2o=h2so3

Sulfurous acid can be oxidized into sulfuric acid in the air.

2h2so3+o2→2h2so4

2) Nitrogen oxides dissolve in water to form acid: During thunderstorms and lightning, a small amount of nitrogen dioxide is often produced in the atmosphere.

When lightning occurs, nitrogen combines with oxygen to form nitric oxide.

N2+O2=Discharge 2NO

Nitric oxide is structurally unstable and oxidizes into nitrogen dioxide in the air.

2no+o2=2no2

Nitrogen dioxide and water react to form nitric acid.

3no2+h2o=2hno3+no

3) Acid rain reacts with marble:

CaCO3+H2SO4=CaSO4+H2O+CO2 CaSO3+SO2+H2O=CA(HSO3)24) In addition, there are other acidic gases dissolved in water that cause acid rain, such as hydrogen fluoride, fluorine gas, chlorine, hydrogen sulfide and other acidic gases.

Factors of Acid Rain:The cause of acid rain is a complex atmospheric chemical and atmospheric physical phenomenon. Acid rain contains a variety of inorganic and organic acids, most of which are sulfuric acid and nitric acid, and a small amount of dust.

Sulfuric acid and nitric acid are the main components of acid rain, accounting for more than 90% of the total acid, and the ratio of sulfuric acid and nitric acid in acid rain in China is about 10:1.

The above content refers to Encyclopedia - Acid Rain.

Acid rainIt is rain, snow, etc., that absorb and dissolve sulfur dioxide in the air during the formation and fallNitrogen oxidesand other substances, forming acidic precipitation with a pH below it.

The formation of acid rain is first of all SO2 dissolved in the air and water in the clouds, forming H2SO3, which is easily oxidized to the more acidic H2SO4, and H2SO4 descends to the ground with the rain to form acid rain, according to which the corresponding chemical equation can be written.

The formation mechanism of acid rain: industrial processes, such as metal smelting: the ores of some non-ferrous metals are sulfides, copper, lead, zinc, and a large amount of sulfur dioxide gas will be escaped in the process of reducing copper, lead, and zinc sulfide ores to metals, and some of them will enter the atmosphere.

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. Acid rain is mainly caused by the anthropogenic release of large amounts of acidic substances into the atmosphere.

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. Acid rain is mainly caused by the anthropogenic release of large amounts of acidic substances into the atmosphere.

Acid rain in China is mainly caused by the burning of a large amount of coal with high sulfur content, mostly sulfuric acid rain, less nitric acid rain, in addition, the exhaust gas emitted by various motor vehicles is also an important cause of acid rain. Some areas in China have become areas prone to acid rain, and the scope and extent of acid rain pollution have attracted people's close attention.

Acid rain is the process of formation and precipitation of rain and snow, which absorbs and dissolves sulfur dioxide, nitrogen oxides and other substances in the air, forming acidic mountains or Zen water with a pH lower than that.

The formation of acid dust rain is first of all SO2 dissolved in the air and water in the clouds, forming H2SO3, H2SO3 is easily oxidized to more acidic H2SO4, and H2SO4 falls to the ground with the rain to form acid rain, according to which the corresponding chemical equation can be written.

The formation mechanism of acid rain: industrial processes, such as metal smelting: some non-ferrous metal ores are sulfides, copper, lead, zinc, copper, lead, zinc sulfide ores will be reduced to metal in the process of chaos will escape a large amount of sulfur dioxide gas, part of the ** sulfuric acid, part of the atmosphere.

The process of acid rain formation is as follows:The modern industrial revolution, starting with the steam engine, boilers burn coal, produce steam, and propel machines; Then there were coal-fired power plants, and the amount of coal burned skyrocketed.

Unfortunately, coal contains about one percent of the impurity sulphur, which emits the acid gas SO2 during combustion; The high temperature generated by combustion can also cause the combustion air generation part to carry back chemical changes, oxygen and nitrogen gas, and also emit the acid gas NOx. They are washed by rain and snow in the high air, dissolved, and the rain becomes acid rain; These acidic gases become impurities in rainwater, such as sulfate, nitrate and ammonium ions.

In 1872, the British scientist Smith analyzed the composition of rainwater in London and found that it was acidic, and the rural rainwater contained ammonium carbonate, which was not very acidic; Suburban rainwater contains ammonium sulfate, which is slightly acidic; Urban rainwater contains sulfuric acid or acidic sulfur trapped hidden salts, which are acidic. Smith first coined the term "acid rain" in his book Air and Rainfall: The Beginnings of Chemical Climatology.

Prevention and control measures: 1Develop new energy sources, such as hydrogen, solar, hydro, tidal, geothermal, etc.

2.Use coal-fired desulphurization technology to reduce sulphur dioxide emissions.

3.Industrial production emissions are discharged after treatment.

4.Drive less and use public transport more.

5.Use more clean energy such as natural gas and less coal.

6.Improve the way the engine burns Wangnu.

7.Through the purification device, the pollutant emissions when burning coal, oil and other fuels are reduced.

If the acidity of the rain continues to increase into acid rain, it will cause great damage to the environment. So what causes precipitation in the sky to become acidic?

After mankind entered the industrial revolution, with the acceleration of industrialization, the consumption of chemical fuels such as coal and oil increased exponentially, which promoted the development of social production and life, and also increased the exhaust gases emitted into the atmosphere day by day.

Coal contains impurities such as sulfur, which emits a large amount of sulfur dioxide during combustion, and oil also releases large amounts of nitrogen oxides when it is burned, and sulfur dioxide and nitrogen oxides are the main culprits of acid rain. Acid rain also has some siblings, such as acid snow, acid fog and acid solid dust, although this acid family is a new member of the atmosphere after industrial civilization, but their erosion of the earth has made human beings taste the consequences of their own actions. Rain.

What causes acid rain? Star Awareness Project

Sulfurous acid is formed when sulfur dioxide hits water vapor, and then becomes sulfuric acid through a series of reactions.

Acid rain prevention and control measures: use less coal as fuel, or fuel desulfurization, use less polluting fuel, etc.

Acid rain is divided into sulfuric acid and nitric acid due to different pollutants, if there is too much sulfur dioxide in the air, sulfuric acid acid rain will be formed, and if nitrogen oxides such as nitric oxide are formed, nitric acid acid rain will be formed.

Sulfur or nitrogen oxides react with water and oxygen in the air and fall down to become acid rain.