What does sulphur dioxide have to do with the formation of acid rain?

Sulfur dioxide is formed in contact with water to form sulfite ions, which are oxidized to sulfuric acid in the air.

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.

The soil contains a large amount of aluminum hydroxides, and after soil acidification, it can accelerate the weathering of aluminum-containing primary and secondary minerals in the soil and release a large number of aluminum ions, forming a form of aluminum compounds that can be absorbed by plants. Plants absorb aluminum for a long time and excessively, can be poisoned and even die.

Acid rain can still accelerate the loss of soil mineral nutrients. Under the action of acid rain, the nutrients potassium, sodium, calcium, and magnesium in the soil are lost and leached away with the rain.

Acid rain can also induce plant pests and diseases, which can significantly reduce crop yields, especially wheat, which can reduce yields by 13 to 34 percent under the influence of acid rain. Soybeans and vegetables are also susceptible to acid rain, resulting in lower protein content and yields.

The effects of acid rain on forests are largely due to the deterioration of the physicochemical properties of the soil. Acid rain can inhibit the reproduction of some soil microorganisms and reduce enzyme activity, and nitrogen-fixing bacteria, bacteria and actinomycetes in soil will be significantly inhibited by acid rain.

Acid rain can cause the hardened cement of non-metallic building materials (concrete, mortar and sand-lime bricks) to dissolve, creating cavities and cracks that lead to a reduction in strength and damage to buildings. Building materials become dirty and dark, affecting the quality of the city's appearance and urban landscape, which is known as the "black shell" effect.

Acid rain is mostly due to the combustion of fossil fuels

Coal containing sulphur is burned to produce sulphur dioxide.

s+o (ignition) so

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

so + h o h so (sulphurous acid).

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

2H SO +O 2H SO (sulfuric acid).

2) Nitrogen oxides are dissolved in water to form acids: 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.

n o (lightning or high temperature) = 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.

3NO + H O = 2Hno (nitric acid) + NO(3) Acid rain reacts with marble:

caco +h so caso +h o+co caso +so +h o=ca(hso) 5) In addition, there are other acid gases dissolved in water that cause acid rain, such as hydrogen fluoride, fluorine gas, chlorine and other acid gases.

so2+h2o==h2so3

2h2so3+o2==2h2so4

Do not write 2SO2 + O2 == catalyst = 2SO3SO3 + H2O = H2SO4 This is not the formation process of acid rain under natural conditions.

The main substances responsible for acid rain are sulphur dioxide and nitrogen dioxide. Acid rain is mainly formed by acid gases such as sulfur dioxide and nitrogen oxides produced by the combustion of fossil fuels, which are absorbed and dissolved by rainwater through complex atmospheric chemical reactions, so the main substances that form acid rain are sulfur dioxide and nitrogen dioxide.

Acid rain is air pollution and refers to rain, snow or other forms of precipitation with a pH less than the pH value. Rainwater is polluted by acidic gases present in the atmosphere. Acid rain is mainly caused by man-made emissions of large amounts of acidic substances into the atmosphere.

China's acid rain is mainly formed by burning 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 reason for the formation of acid rain. In recent years, 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.

so2 + h2o ==h2so3

SO2 + O2 ==SO3 (SO2 reacts with O2 under the action of dust) SO3 + H2O ==H2SO4

H2SO3 and H2SO4 fall with rain to form acid rain.

Liquid phase: SO2+H2O=H2SO3

2h2so3+o2=2h2so4

Gas phase: 2SO2+O2=2SO3

so3+h2o=h2so4

Since the air contains dust, it acts as a catalyst and can oxidize SO2.

The process by which sulfur dioxide forms acid rain, which includes:

so2+h2o=h2so3

2h2so3 +o2 =2h2so4

2so2 + o2 =2 so3

2 so3+h2o=h2so4

2so2 + o2 + 2h2o =2 h2so4