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© www.chemsheets.co.uk GCSE 036 08-April-13
Substance formedHow it is formedPotential problemsWays to reduce the problem Carbon dioxide CO 2 Complete combustion (reaction with oxygen) of C in fuel Greenhouse gas causing global warming Burn less fossil fuels Carbon monoxide CO Incomplete combustion (reaction with oxygen) of C in fuel Toxic Ensure there is a good supply of air/oxygen when burned Carbon C Incomplete combustion (reaction with oxygen) of C in fuel Blackens buildings Global dimming Ensure there is a good supply of air/oxygen when burned Sulfur dioxide SO 2 Combustion of S (reaction with oxygen) in fuel Acid rain Remove S from fuel before burning; or remove SO 2 from fumes after burning (flue gas desulfurization) Nitrogen oxides NO & NO 2 Reaction of N 2 in air with O 2 in air at very high temperatures (often in engines or furnaces) Acid rainFor engines use a catalytic converter Unburned fuelNot all fuel burnsHarmful and a greenhouse gas Ensure correct fuel:air mixture when fuel is burned © www.chemsheets.co.uk GCSE 036 08-April-13
ACID RAIN Damages plants
Branches from a tree in Germany's Black Forest show needle loss and yellowed boughs caused by acid rain
Damages some stones (e.g. limestone) 1908 1968
Much SO 2 from power stations
Remove SO 2 by flue gas desulphurisation
Much SO 2 from power stations Catalytic converters in cars remove NO x
CO 2 is a greenhouse gas
CO 2 emissions From Wikipedia
The Earth is getting warmer From New Scientist
Sea levels are rising From thesilentearth.com
Human Impact on Air Resources
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Click hexagons once to change to blue Twice to change to white Click a third time to restore.
Copyright © Marshall Cavendish International (Singapore) Pte. Ltd. Acid Rain Acid rain is formed when acidic air pollutants such as sulphur dioxide.
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