ABSTRACT
This chapter provides an interdisciplinary understanding of acid rain and proposal of solutions. Acid rain is one of the many environmental problems caused by air pollution. Acid snow and acid fog also occur. Acid rain is caused by sulfur oxides, nitrogen oxides derived from nitrogen fertilizers, and hydrogen chloride, generated by combustion of fossil fuels such as coal and by volcanic activity. Cation exchange capacity is the amount of cations that a certain amount of soil can hold. Clay and humus in the soil are negatively charged and have the ability to attract positive ions. Therefore, cations are adsorbed and retained. Although it is nonvolatile unlike hydrochloric acid, sulfuric acid with low concentration can get concentrated when water evaporates. So there is a danger of creating holes on clothes upon contact with the acid. When reacting with metals, the behavior depends on the concentration of sulfuric acid, temperature, and the kind of metal.
