mt1_reactionreview

mt1_reactionreview - Chemistry 173 Atmospheric Chemistry...

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Unformatted text preview: Chemistry 173: Atmospheric Chemistry Review for Midterm 1: Noteworthy Reactions Major Air Pollutants (4/2/04) Formation of Acid Rain - sulfur compounds: SO 2(g) + H 2 O + ½ O 2 Æ H 2 SO 4 (-> sulfates with high RI; PM) - nitrogen compounds: HNO 3(g) + NH 3(g) <-> NH 4 NO 3(s) (high RI) Nitrogen Compounds - NO + NO 2 Æ NO x- N 2 + O 2 – ∆-> 2NO Æ Æ NO 2- Acid rain on west coast mainly from HNO 3 Steady-State Assumption (discussion 4/5/04) 1. A + B – k 1 –> AB* 2. AB* – k 2 –> A + B 3. AB* + M – k 3 –> AB + M* 4. M* --> M + heat Stratospheric Chemistry (4/9/04) - O 2 + hv Æ 2O( 3 P) O ( 3 P) + O 2 + M Æ O 3 + M (formation of O 3 in stratosphere) Chapman Reactions (predicts 25% extra O 3 concentration) O 2 + hv Æ 2O( 3 P) (wavelength < 242 nm) O( 3 P) + O 2 + M Æ O 3 + M O 3 + hv Æ O 2 + O( 1 D) (removal mechanism by photolysis, wavelength < 336 nm) O( 1 D) + M Æ O( 3 P) + M O( 3 P) + O 3 Æ 2O 2 Catalytic Loss Reactions of O 3 (apparently all other rxns just involve “X” substitutions) - X + O 3 Æ XO + O...
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This note was uploaded on 10/28/2010 for the course CHEM 173 taught by Professor Dr.dancziczo during the Spring '10 term at UC Riverside.

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mt1_reactionreview - Chemistry 173 Atmospheric Chemistry...

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