Chemsheets AS006 (Electron arrangement)

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Presentation transcript:

Chemsheets AS006 (Electron arrangement) 24/05/2018 www.CHEMSHEETS.co.uk BURNING FOSSIL FUELS © www.chemsheets.co.uk AS 1092 11-July-2015

Ways to reduce the problem Substance formed How it is formed Potential problems Ways to reduce the problem Carbon dioxide CO2 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 (soot) C Blackens buildings Global dimming Sulfur dioxide SO2 Combustion of S (reaction with oxygen) in fuel Acid rain Remove S from fuel before burning; or remove SO2 from fumes after burning (flue gas desulfurization) Nitrogen oxides NO & NO2 Reaction of N2 in air with O2 in air at very high temperatures (often in engines or furnaces) For engines use a catalytic converter Unburned fuel Not all fuel burns Wastes fuel, harmful & a greenhouse gas Ensure correct fuel:air mixture when fuel is burned © www.chemsheets.co.uk AS 1092 11-July-2015

ACID RAIN Damages plants

Branches from a tree in Germany's Black Forest show needle loss and yellowed boughs caused by acid rain

Kills fish

Damages some stones (e.g. limestone) 1908 1968 Damages some stones (e.g. limestone)

Much SO2 from power stations

Remove SO2 by flue gas desulphurisation Much SO2 from power stations CaO + SO2  CaSO3 or CaCO3 + SO2  CaSO3 + CO2 Remove SO2 by flue gas desulphurisation

Remove SO2 by flue gas desulphurisation Much SO2 from power stations CaO + SO2  CaSO3 or CaCO3 + SO2  CaSO3 + CO2 Remove SO2 by flue gas desulphurisation

Much SO2 from power stations Catalytic converters in cars remove NOx

CO2 is a greenhouse gas

CO2 emissions From Wikipedia

The Earth is getting warmer From New Scientist

Sea levels are rising From thesilentearth.com