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Crude oil and fuels

5 lessons in Organic chemistry.

26 exam questions · 45 marks

7.1 Crude oil, hydrocarbons and alkanes What crude oil is and how it formed, what hydrocarbons are, the alkanes as a homologous series with the general formula CnH2n+2, and the names, formulae and displayed formulae of the first four alkanes. AQA Edexcel OCR 7.2 Fractional distillation of crude oil How crude oil is separated into fractions by fractional distillation, how the temperature gradient in the column separates hydrocarbons by boiling point, and the uses of the fractions as fuels and feedstock. AQA Edexcel OCR 7.3 Properties and combustion of hydrocarbons How boiling point, viscosity and flammability change with the chain length of hydrocarbons, how this affects their use as fuels, and the complete combustion of hydrocarbons with balanced equations. AQA Edexcel OCR 7.4 Cracking and alkenes How long-chain hydrocarbons are cracked into shorter, more useful alkanes and alkenes by catalytic and steam cracking, why cracking is needed to match supply and demand, balancing cracking equations, and the bromine water test for alkenes. AQA Edexcel OCR 7.5 Hydrogen versus petrol as a fuel The advantages and disadvantages of using hydrogen rather than petrol as a fuel for cars, including the products of combustion, how hydrogen is produced and stored, and the availability of each fuel. Edexcel