Abstract

Rain or any other type of precipitation that is unusually acidic is known as acid rain because it contains more hydrogen ions (low pH) than normal. The majority of water, including drinking water, has a neutral pH between 6.5 and 8.5; however, acid rain typically has a pH level between 4 and 5. The pH of the acid rain decreases with increasing acidity. Infrastructure, aquatic animals, and plants can all be damaged by acid rain. Sulfur dioxide and nitrogen oxide emissions, which react with the water molecules in the atmosphere to produce acids, are what lead to acid rain.