COMBUSTION

• HYDROCARBONS:

  • Can be used as FUELS e.g. for CARS, ships, PLANES
  • Release ENERGY when BURNED / COMBUSTED (with OXYGEN)
• WHEN HYDROCARBONS ARE COMBUSTED:

  • HYDROGEN & CARBON become OXIDISED (react with OXYGEN)
  • This is an EXOTHERMIC reaction (lots of ENERGY is RELEASED to SURROUNDINGS)
  • Enough oxygen- COMPLETE combustion produces CO2 + H2O
• BALANCING EQUATIONS- EXAM QUESTION 1:

  1 CH4 + 2 O2 -> 1 CO2 + 2 H2O
• BALANCING EQUATIONS- EXAM QUESTION 2:

  2 C2H6 + 7 O2 -> 4 CO2 + 6 H2O