ch 6 front- Spring 2006 - Sparks

ch 6 front- Spring 2006 - Sparks - 1. SO2 and SO3 (SOx):...

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1. SO2 and SO3 (SOx): coal from fossil fuel plants (combustion, 95%) decrease (40%) a. S + O SO2 b. 2 SO2 + O2 2SO3 c. SO3 +H2O H2SO4 (sulfur trioxide is an “acid anhydride”) d. Decrease in developed countries like US and Increased in developing countries like China 2. NO and NOx (NOx): high heat from automobile (big prob. Bc no single source) a. N2 + O2 2NO (at high Temp) b. NO are free radical (odd # of electrons) and are very volatile c. NO2 +OH HNO3 (nitric acid) d. HNO3 + H2O H3O + + NO3 - 3. Acid Rain damage Iron and Limestone 4. Acid Rain cause Health Effects: Summer Haze and Metal Solubility a. Summer Haze: aerosols, prevalent in Eastern US, Both SO2 and NOx contribute i. SO2 (colorless) SO3 (colorless) ii. SO3 is hydroscopic (readily absorbs water) SO3 + H2O H2SO4 iii. iv. Ammonian Sulfate (NH4)2 SO4 b. Increase Solubility i. Zn(s) + H + (aq) Zn 2+ (aq)+ H2(g) ii.
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This note was uploaded on 11/29/2010 for the course CH 305K taught by Professor Campion during the Spring '09 term at University of Texas at Austin.

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