7.1 tetrahedral carbon   alkanes 7.1
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7.1 tetrahedral carbon alkanes 7.1

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7.1 tetrahedral carbon alkanes 7.1 Presentation Transcript

  • 1. Alkanes
  • 2. Alkanes  Methane  Ethane CH4 C2H6  Propane  Butane General Formula C3H8 C4H10 CnH2n+2  Pentane  Hexane  Heptane  Octane C5H12 C6H14 C7H16 C8H18
  • 3. Alkanes  Alkanes are saturated hydrocarbons, as all bonds in alkane molecules are single bonds
  • 4. Methane CH4
  • 5. Ethane C2H6
  • 6. Propane C3H8
  • 7. Butane C4H10
  • 8. Pentane C5H12
  • 9. Alkanes  Alkane molecules are tetrahedral, e.g. propane
  • 10. Physical properties  Physical state: The first four alkanes are gases, while pentane and higher alkanes are liquids  Insoluble in water  Soluble in non-polar solvents such as cyclohexane
  • 11. Uses  Used as fuels  Petrol, diesel, LPG and natural gas are all mixtures of alkanes