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분야
pptxChemical Reactions in the Atmosphere
Carbon Monoxide
Sources of CO
Effects of CO on Human Health
Nitrogen Oxides
Sources of NOx
Fate of Atmospheric NOx
Effects of Nox on Human Health and the Environment
VOC,Volatile Organic Compounds
Volatile Organic Compounds
Sulfur Dioxide(SO2)
The Fate of Atmospheric SO2: Acid Rain
Methods for controlling emissions of SO₂
Industrial Smog
Production of hydroxyl radical
Production of hydroxyl
Reactions of Hydroxyl Radicals with HCs-Abstraction of Hydrogen
Secondary Smog-Forming Reactions
Ozone: A Pollutant in the Troposphere
Temperature Inversions and Smog
Regulating Air Pollution
Indoor Air Pollution
The release of SO2 to the atmosphere is the primary cause of acid rain in the world.
Fossil fuel combustion at electric power-generating plants accounts for about70% of
the emissions.
Coal, Oil, and all other fossil fuels naturally
contain some sulfur.
Volcanic eruptions are another more localized natural source of SO2
SO2 + OH. HSO3.
HSO3. + O2 SO3 + HOO.
SO3 + H2O H2SO4(g)
H2SO4 + H2O H2SO4 (aq)
The Fate of Atmospheric SO2: Acid Rain
[HSO3-] = [H+]
and
Ka = 1.7 x 10-2 = [HSO3-][H+] = [HSO3-]2
[H2SO3] 1.0 x 10-7
[HSO3-] = 4.1 x 10-5 M
So the ratio of HSO3- to H2SO3 is 410:1 (4.1 x 10-5 /1.0 x 10-7).
Because [HSO3-] = [H+] = 4.1 x 10-5 M
