Combustion of Hydrocarbons

• What should you be able to describe by the end of the video?

  How hydrocarbons can be used as fuels
• What is the result of combusting hydrocarbon fuels?

  They release energy when combusted
• What does the term 'combustion' mean?

  It means burned
• What do carbon and hydrogen atoms in hydrocarbons react with during combustion?

  They react with oxygen
• What is produced during complete combustion when oxygen is unlimited?

  Carbon dioxide and water
• What is the equation for the complete combustion of methane?

  CH₄ + 2O₂ → CO₂ + 2H₂O
• How do you balance the carbon atoms in the combustion of methane?

  By ensuring one carbon atom in each side
• How do you balance the hydrogen atoms in the combustion of methane?

  By placing a large two in front of water
• How do you balance the oxygen atoms in the combustion of methane?

  By placing a large two in front of O₂
• What is the balanced equation for the combustion of propane (C₃H₈)?

  C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
• What are the properties of short-chain hydrocarbons?

  • Highly flammable
  • Low boiling points
• What happens to the properties of hydrocarbons as the molecule size increases?

  • Less flammable
  • Higher boiling points
  • Higher viscosity
• How do you balance the combustion equation for a hydrocarbon?

  1. Balance carbon atoms
  2. Balance hydrogen atoms
  3. Balance oxygen atoms
• What is a common application of hydrocarbon fuels?

  • Ships
  • Planes
  • Cars
• What is the significance of balancing chemical equations?

  • Ensures conservation of mass
  • Reflects correct stoichiometry
• Where can you find questions on combustion in the video lessons?

  In the vision workbook