Combustion of alkanes as fuels

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What is complete combustion

Shorter chain alkanes are more likely to undergo complete combustion

<p>Shorter chain alkanes are more likely to undergo complete combustion</p>
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What is incomplete combustion

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What are the consequences of incomplete combustion

  • Combustion of sulfur containing fuels causes sulfur dioxide (SO2) to be released into the atmosphere, this can lead to acid rain

  • High temperature and pressures inside internal combustion engines causes nitrogen and oxygen to react together, forming nitrogen oxides (NOx), that can lead to acid rain.

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How can flue gases be removed

  • We can remove sulfur dioxide by reacting with calcium oxide or calcium carbonate.

  • This is because sulfur dioxide is acidic and calcium oxide is basic. The balanced equation for the process is:

    • CaO +SO2 → CaSO3

      CaCo3 is a solid so its easier to collect

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What can be used to remove nitrous oxides from fuel

  • Catalytic converters can remove unburned hydrocarbons and nitrous oxides from fuel such as platinum or rhodium.