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Crude Oil - Coggle Diagram

- - - - eg. Methane (CH4)
- - - - Most hydrocarbons evaporate
        
        The column is hotter at the bottom and cooler at the top
        
        As vapours rise up the column, they condense as they reach their bpt
        
        Largest molecules condense closer to the bottom and run off
        
        Smallest molecules have the lowest bpts so escape flow out the top as gases
  - - - Hydrocarbons with the lowest bpts evaporate first
        
        These vapours condense in the condenser to form liquid fractions
        
        The mixture is heated strongly, so hydrocarbons with higher bpts evaporate and condense
- - - - Carbon Monoxide - POISONOUS
      - Carbon (soot) - DIRTY
      - Less energy/ heat realeased than complete combustion
        
        Less efficient use of resources
      - eg. 2C3H8 + 7O2 → 6CO + 8H2O
        OR C3H8 + 2O2 → 3C + 4H2O
  - - - eg. Combustion of propane C3H8 + 5O2 → 3CO2 + 4H2O