Chemistry 5070 · O Level · Fuels

Fuels — practice question

Petroleum consists of a mixture of hydrocarbons, and most of these are alkanes.
(a)[1]

Deduce the molecular formula for tetradecane.

(b)[1]

State the name of the alkane in Table 8.1 with the highest viscosity.

(c(i))[3]

Explain how petroleum is separated by fractional distillation.

(c(ii))[1]

Methane and ethane both belong to the refinery gas fraction. State one use of the refinery gas fraction.

(c(iii))[1]

Decane is part of the naphtha fraction. State one use of the naphtha fraction.

Worked solution & mark scheme

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