atmochem - Atmospheric Chemistry Physical structure of the...

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Atmospheric Chemistry Physical structure of the atmosphere Chemical composition of the atmosphere Chemical reactions in the atmosphere Photochemistry • since the earth is bathed in UV and visible light, photochemistry is important in the stratosphere, troposphere, and surface waters • absorption of light creates highly reactive photoreactants (O, O*, OH·, Cl·, RCOO·) in the atmosphere , photochemistry is responsible for ozone formation/destruction and S, N, and C oxidation in aquatic systems , photochemistry is involved in the transformation and degradation of organic matter and the geochemical cycling of iron and other transition metals Photochemical reactions require: 1. absorption of light by the reactant 2. light with sufficient energy to drive the reaction l i g h t Consider the reaction: O 2 –––––––> 2O Question: What wavelength of light drives this reaction? Approach:
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This note was uploaded on 10/25/2011 for the course ENVSCI 202 taught by Professor Staff during the Spring '11 term at Rutgers.

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atmochem - Atmospheric Chemistry Physical structure of the...

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