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Acid rain (more correctly acidic precipitation) refers to the rain or snow wih a pH lower than 7.
"Clean" or unpolluted rain has a slightly acidic pH of about 5.2, because carbon dioxide and water in the air react together to form carbonic acid, a weak acid (pH 5.6 in distilled water), but unpolluted rain also contains other chemicals. H2O (l) + CO2 (g) → H2CO3 (aq) Carbonic acid then can ionize in water forming low concentrations of hydronium ions: 2H2O (l) + H2CO3 (aq) CO32- (aq) + 2H3O+(aq) The extra acidity in rain comes from the reaction of primary air pollutants, primarily sulphur oxides and nitrogen oxides, with water in the air to form strong acids (like sulphuric and nitric acid). The main sources of these pollutants are industrial power-generating plants and vehicles.
The chemistry:
Sulphur dioxide and water form sulphurous acid (H2SO3)
SO2(g) + H2O(l) <--> H2SO3(aq)
In some cases sulphur dioxide (SO2) oxidizes to sulphur trioxide (SO3)
2SO2(g) + O2(g) -> 2SO3(g)
The sulphur trioxide (SO3) then combines with water making sulphuric acid (H2SO4)
SO3(g) + H2O(l) -> H2SO4(aq)
Some oxides of nitrogen like nitrogen dioxide (NO2) react with water to form nitrous acid (HNO2) and nitric acid (HNO3)
2NO2(g) + H2O(l) -> HNO2(aq) + HNO3(aq)
What else can I help you with?
What are the physical and chemical properties of acid rain?
Acid rain is characterized by its low pH, typically below 5.6, due to the presence of sulfur dioxide and nitrogen oxides in the atmosphere. These compounds react with water, oxygen, and other chemicals in the air to form sulfuric and nitric acids. Acid rain can have detrimental effects on aquatic ecosystems, forests, and buildings due to its corrosive nature.
What is an agent of chemical weathering which combines with water to form a Carbonic acid?
Carbon Dioxide from the atmosphere combines with water to form carbonic acid, it is a form of acid rain.
Is marble dissolves in acid rain physical or chemical change?
Marble dissolving in acid rain is a chemical change. The acid reacts with the calcium carbonate in the marble to form new substances, such as carbon dioxide and water. This chemical reaction alters the composition of the marble, leading to its dissolution.
Is rain and acid a rock chemical?
An acid rain contain acids as HNO3, H2SO4, HCl.
What are the differences between physical and chemical weathering and say what type acid rain is?
Physical weathering involves the breakdown of rocks into smaller pieces without changing their chemical composition, while chemical weathering involves the alteration of rocks through chemical reactions. Acid rain is a form of chemical weathering, as it can react with rocks and minerals to degrade them.
What had acid rain to to do with chemical weathering?
The effect of acid rains is a form of chemical weathering.
When chemicals combine with water vapor in the air what do they form?
When chemicals combine with water vapor in the air, they can form acidic compounds such as sulfuric acid or nitric acid. These compounds can contribute to acid rain and other forms of environmental pollution.
Which is a cause of chemical weathering?
When the weather damages things such as acid rain, it is weathering. Acid Rain is chemical weathering because it is rain with the chemical acid in it and it can damage things like buildings, rocks and other objects. Other types of weathering are Physical Biological
Which compounds does not dissolve in water and cause acid rain?
Compounds such as sulfur dioxide (SO2) and nitrogen oxides (NOx) can cause acid rain. These compounds react with water in the atmosphere to form sulfuric acid and nitric acid, which then fall back to Earth in the form of acid rain.
What are the physical and chemical properties of acid rain?
Acid rain is characterized by its low pH, typically below 5.6, due to the presence of sulfur dioxide and nitrogen oxides in the atmosphere. These compounds react with water, oxygen, and other chemicals in the air to form sulfuric and nitric acids. Acid rain can have detrimental effects on aquatic ecosystems, forests, and buildings due to its corrosive nature.
The sulfur and nitrogen compounds in smog combines to form?
sulfuric acid and nitric acid, which are responsible for acid rain formation.
What environment problem is the result of chemical reactions in the atmosphere that involves sulfur?
Acid rain is the environmental problem resulting from chemical reactions in the atmosphere that involve sulfur. Sulfur compounds released from burning fossil fuels react with moisture in the air to form sulfuric acid, which can harm ecosystems, water bodies, and infrastructure.
What is an agent of chemical weathering which combines with water to form a Carbonic acid?
Carbon Dioxide from the atmosphere combines with water to form carbonic acid, it is a form of acid rain.
What environmental problem is the result of chemical reactions in the atmosphere that involve sulfur?
The environmental problem resulting from sulfur-related chemical reactions in the atmosphere is acid rain. When sulfur dioxide and other sulfur compounds combine with water vapor and other substances in the air, they form sulfuric acid. This acidic precipitation can harm forests, freshwater ecosystems, buildings, and infrastructure.
How does acid relate to acid rain?
Acid rain is the result of chemical reactions in the atmosphere.
Compounds formed by the burning of fossil fuels combine with water in the atmosphere to form what?
Compounds formed by the burning of fossil fuels combine with water in the atmosphere to form acid rain. Acid rain is a harmful type of precipitation that can damage the environment, soil, and water bodies when it falls.
What substances does rain mix with to become acidic?
"Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain."
