Acid rain is formed mainly because of burning of fossil fuel. When fossil fuel is burned large amount of air pollution is being formed that in turn create air pollution. The air pollution contains sulphur dioxide (SO2) and nitrous oxides (NOx).In other words acid rain is caused mainly due to the chemical reaction that take place when sulphur dioxide and nitrous oxide released in to the atmosphere. The acid rain formation is primarily called as acid deposition.
The component of acid deposition is sulphuric acid and nitric acid. Sulphuric acid is formed by the reaction that takes place between sulphur dioxides and water, oxygen and other chemicals in the air. Nitric acid is formed by the reaction that takes place between nitrous oxides (NOx) and water, oxygen and other chemicals in the air.
Burning of coal, oil, natural gas, wood is generally called fossil fuel which is the main reason behind formation of acid rain. The reason does not only stop with the list of chemical it includes human activities too. Humans are also one of the main reasons behind the formation of acid rain. They release so many pollution knowingly and unknowingly.In simple terms acid rain is formed because of pollution.
Out of hundred percentage of the acid rain formation, 70% is caused mainly because of sulphur dioxide. The electrical utility plant is the main source of sulphur dioxide. Rest thirty percentage is because of the exhaust that comes out of cars, buses, trucks etc.
The reaction that takes place in air takes time, it can be for hours, it can be for days, and during the reaction the polluted air will be covering miles and kilometers. The acid rain when it falls it not only destroys the environment but also the life of a human being, plants, animals and also destroys the organisms in lakes and ponds. If acid rain destroys forest it ultimately affects the humans. If forest is being affected, humans may not get fresh air in the long run, water and even the atmosphere gets damaged as well.
The emission that comes out of automobile causes 30% of the acid rain formation. This emission can be controlled by humans. Instead of taking cars, two wheeler, to drive to a particular place, one can take up a cycle or else can go walking. Which is healthy for oneself and as well as for the environment.
The main reason for the sulphuric acid formation is due to the in proper usage of electricity.
The other way to reduce is to use electricity properly. Seventy percentage of acid rain formation is due to sulphur dioxide formation. The electricity usage if properly used the formation of acid rain can be prevented to a certain extend. Switching off light, turning off TV when not in use, putting computer in off mode instead of sleep mode, reducing air conditioning and heat usage are some of the prevention technique from the formation of acid rain.