"b7bbed0f-24a1-44d8-a10d-92541cd2c05b" . "NITRIC ACID"^^ . "Nitric Acid (HNO3) is a corrosive, non-volatile, inorganic acid. It is\nformed by the conversion of nitrogen oxide into nitrogen dioxide, and then\ninto nitric acid, which is highly water soluble. This solubility allows\neasy removal of nitric acid from the troposphere into rain - commonly\nreferred to as acid rain. Nitric acid has a relatively low concentration\nin the atmosphere but provides an important role in the production of\nsulfuric acid by acting as a catalyst in the conversion of sulfur dioxide\nto sulfuric acid. [T.E Graedel and Paul J. Crutzen. Atmospheric Change:\nAn Earth System Perspective. WH Freeman and Co, NY.1993.]"^^ . .