Upon completion of this module, you should be able to understand the causes of acidic rain, understand how to measure the pH of acidic rain, understand forms of acid deposition and understand the measures to reduce acid rain. Emissions from factories, vehicles, and the burning of fossil fuels release gases such as carbon dioxide, sulfur dioxide, and nitrogen dioxide that can react with water to produce acid rain. (a+b)2 = a2+b2+2ab
H2 + 0 ---> H20