1) Acid rain is formed when the air humidity is combined with oxides of nitrogen, sulfur dioxide or sulfur trioxide emitted by factories, power plants, heating boilers and vehicles that burn coal or products derived from Oil containing sulfur. Finally, these chemicals fall to the earth accompanying precipitation, constituting Acid rain.
2) Primary atmospheric pollutants that provoke the acid rain can travel long distances, being moved by the wind to hundreds or thousands of miles.
3) The Acid rain can be in the form of dew, rain, drizzle, hail, snow, fog or mist.
4) When precipitation occurs, it can cause deterioration of the environment.
5) Acid rain usually has a pH of approximately 5.65 (slightly acidic), due to the presence of atmospheric CO2, which forms carbonic acid, H2CO3.
6) It is considered Acid rain if it has a ph of less than 51 and can reach the ph of vinegar (ph 3).
7) Acid rain, due to its corrosive nature, destroys buildings and infrastructures.
8) It can dissolve, for example, calcium carbonate, CaCO3, and affect monuments and buildings built with marble or limestone.
9) It led to an impoverishment in specific essential nutrients of the soil.
10) Nitrates and sulfates, added to the leached cations of soils, contribute to the eutrophication of rivers, lakes, reservoirs and coastal regions, which deteriorates their natural environmental conditions.