CHEM 2610 Lecture 10: Chemistry of Acid Rain and Atmospheric Production
26 Dec 2015
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Week 10 - chemistry of acid rain and atmospheric. Acid rain is related to photochemical smog and ozone formation + depletion. Not all areas are equally susceptible to acid rain. Anthropogenic and natural so2 and nox (no, no2) Carbon dioxide dissolved in water forms carbonic acid. Carbonic acid readily dissociates and forms carbonate and bicarbonate, which acts as a buffer in the water. Anthropogenic - by product of all combustion processes. Can act as condensation nucleus for the formation of water droplets or be deposited as dry aerosol. Higher s content in coal = higher so2 emissions. 3 reactions that are taking place - main routes of oxidation for sulphur dioxide. So2 makes a larger contribution to acid rain in less industrialized areas because of the lack of nox emissions and their ability to oxidize and deposit faster. Sulphur dioxide - phytotoxic >0. 1 ppm - irritant. Effects of acid rain in limestone areas vs.
