8.5a Gases that cause acid rain

Memorize these gases

nitrogen or sulfur oxides dissolve in water to form HNO3, HNO2, H2SO4 and H2SO3

Note that CO2 is NOT causing acid rain because dissolved CO2 and has a pH of 5.6. Acid deposition (acid rain) has a pH below 5.6

 

Cause

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Write the equations that describe the combustion of sulfur and nitrogen to their oxides and the subsequent formation of HNO3, HNO2, H2SO4 and H2SO3

 

N2 + O2 --> 2NO

2NO + O2 --> 2NO2

 

2NO2 + H2O --> HNO3 + HNO2

 

Consequence

Machine generated alternative text:

Write the equations for acid deposition with reactive metals and carbonates

 

How do we reduce it?

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