Combustion of Hydrocarbons

Chemistry: Cambridge International GCSE Supplement, topic 4.1.10

Burning Hydrocarbons

The equations for the combustion (burning) of hydrocarbons depend on the amount of oxygen that is available.

Burning with plenty of oxygen

Burning with plenty of oxygen

  • The combustion (burning) of hydrocarbons when there is a good air supply involve:
  • Energy release.
  • The oxidation of carbon and hydrogen to create carbon dioxide and water.
Burning with a lack of oxygen

Burning with a lack of oxygen

  • If alkanes are burned without enough oxygen, then carbon monoxide can be created:
  • 2C + O2 → 2CO
  • Carbon monoxide is a gas with the following properties:
  • Colourless
  • Toxic
  • Odourless

Test yourself on Combustion of Hydrocarbons

  • When a hydrocarbon burns completely in a good supply of oxygen, it...

  • What doesn't occur when hydrocarbons burn in a good air supply?

  • Name 3 properties of carbon monoxide

  • Whether burning hydrocarbons produces carbon dioxide or carbon monoxide...

  • What results from burning hydrocarbons in a plentiful supply of oxygen?

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