Burning fuels creates many atmospheric pollutants.
|Carbon dioxide CO2||Complete combustion of any fuel containing carbon.|
|Carbon monoxide CO||Incomplete combustion of any fuel containing carbon.|
|Sulfur dioxide SO2||Combustion of a fossil fuel that contains sulfur impurities.|
Sulfur dioxide is created when sulfur atoms, present in some fossil fuels, are oxidised.
sulfur + oxygen → sulfur dioxide
S + O2 → SO2
Sulfur dioxide can react with rain water forming sulfurous acid, H2SO3 which falls as acid rain.
SO2 + H2O → H2SO3
Acid rain harms and kills living things, especially those in aquatic environments. It can also damage limestone and marble statues and buildings. Acid rain also defoliates trees.