Zusammenfassung der Ressource
Crude Oil double award revision
- mixture of hydrocarbons
- compound containing ONLY c & H atoms
- Alkanes
- saturated
- only single bonds between C atoms
- CnH2n+2
- react with bromine
- needs UV light
- substitution reaction
- CH4 + Br2 - CH3Br
- combustion
- reaction with oxygen
- forms carbon dioxide & water
- limited combustion if not enough oxygen
- forms carbon monoxide & water
- poisonous as reduces capacity of blood to carry oxygen
- homologous series
- methane
- CH4
- ethane
- C2H6
- propane
- C3H8
- butane
- C4H10
- pentane
- C5H12
- made up of different sized molecules
- separated using fractional distillation
- small molecules have low bpt; large molecules have high bpt
- takes place in fractionating tower
- tower hotter at bottom, cooler at top
- smaller molecules formed at top of tower, larger at bottom
- separated into fractions
- bitumen
- making roads
- highest bpt & most viscous
- diesel oil
- fuel for lorries
- kerosene
- fuel for planes
- gasoline
- fuel for cars
- refinery gases
- camping gas
- lowest bpt & least visous
- Cracking of fractions
- long chain alkanes converted to shorter chain alkanes
- better fuels
- alkenes are also produced
- 600-700C
- aluminium oxide catalyst