Final Revision Worksheet

Label the figure below representing the setup for fractional distillation:

Define fractional distillation:

When the mixture is heated which substance will be collected at first place as a distillate?

What role does the fractionating column have in fractional distillation technique?

What is the name of this method of separation?

Why can ethanol and water be separated by this method?

Suggest why water should enter the condenser at A rather than B.

Explain why the first liquid to be collected in the beaker is mostly ethanol?

What are most of the compounds in a crude oil made up of? (Name the atoms)

Molecules of various petroleum consist of different number of carbon atoms. Write down number of carbon atoms for the following: Diesels = ___________ carbon atoms Petrol = ___________ carbon atoms