CHEM 1214 Lecture Notes - Lecture 1: Oxidation State, Nitric Oxide, Amphoterism

• School: Northeastern University
• Department: Chemistry & Chemical Biology
• Course: CHEM 1214
• Professor: Lykourinou Vasiliki

Document Summary

Acid rain: pure water has a ph of 7. 0. However, atmostpheric carbon dioxide dissolves in natural rainwater, forming carbonic acid. Therefore, natural rainwater has a ph of about 5. 6: in automobile engines, atmospheric nitrogen reacts with oxygen to form nitrogen monoxide (no). The various nitrogen oxides react with atmospheric oxygen to form nitrogen dioxide (no2). In addition, some factory emissions contain sulfur dioxide (so2o. Sulfur dioxide reacts with atmospheric oxygen to form sulfur trioxide (so3): in the atmosphere, some of the sulfur trioxide dissolves in water, forming sulfuric acid (h2so4). Some of the nitrogen dioxide also dissolves in water to form nitric acid (hno3). This acidic water falls as rain and snow: if soil around a lake does not contain enough basic components to neutralize the acid, the lake becomes acidic, the acidified lake can also produce acid fog. Acid-base ionization: when acids and bases dissolve in water, they affect the concentration of hydronium ions ([h3o+]) in solution.