Edexcel IAL Chemistry 4.12 Crude oil processing and fuels

Identify the required process from the product change, conserve carbon and hydrogen in cracking equations and connect chain shape or fraction size to fuel use.

Exam points

Explain fractional distillation through boiling range and condensation level in the column.
Balance cracking equations that form shorter alkanes, alkenes or hydrogen.
Identify reforming or isomerisation as increasing petrol octane performance.

[Maximum number: 1]

This question is about fuels and polymers. Used coffee grounds have been suggested as a carbon-neutral fuel to replace some fossil fuels.

Long chain alkanes are converted into smaller, more useful molecules including alkenes.

Name this process.

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4.12—Alkanes are used as fuels and obtained from the fractional distillation, cracking and reforming of crude oil question 1