Combustion of Hydrocarbons and Fractional Distillation of Crude Oil 0.0 / 5 ? ChemistryOrganic and Green ChemistryGCSEAQA Created by: NatmacCreated on: 04-02-19 17:39 When do Hydrocarbons release energy? When they are combusted (burned) 1 of 11 What happens during combustion? The carbon and hydrogen atoms in the fuel react with oxygen.The carbon and hydrogen are oxidised 2 of 11 What happens if Oxygen is unlimited and what do scientists call this? This reaction produces carbon dioxide and water. This is called complete combustion. 3 of 11 Fractional Distillation of Crude Oil Fractional Distillation of Crude Oil 4 of 11 How do we separate crude oil? Fractional Distillation 5 of 11 What do the fractions contain? They contain hydrocarbons with a similar number of carbon atoms 6 of 11 Name the first stage of fractional distillation? Firstly, the crude oil is heated to a very heat temperature. This causes the crude oil to boil. 7 of 11 Name the second stage of fractional distillation? The crude oil vapour is now fed into the fractional distillation column. The column is hotter at the bottom and cooler at the top. 8 of 11 Name the the third stage of fractional distillation? The hydrocarbons vapours now rise up the column. 9 of 11 Name the fourth stage of fractional distillation? Hydrocarbons condense (turn back to a liquid) when they reach their boiling points. The liquid fractions are then removed 10 of 11 Name the fifth stage of fractional distillation? The remaining hydrocarbons continue moving up the column. These now condense when they reach their boiling point 11 of 11
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