Chemistry 5070 · O Level · Separation and purification

Separation and purification — practice question

A student uses the apparatus shown to separate a mixture of pentane and hexane. Pentane is collected in the conical flask.
(a(i))[1]

What is the name of apparatus A?

(a(ii))[1]

What is apparatus A used for?

(a(iii))[1]

What is the name of apparatus B?

(b)[2]

Name two mistakes in the student's apparatus.

(c)[1]

What process is used to separate the mixture of liquids?

(d(i))[1]

State why a Bunsen burner should not be used to heat the pentane and hexane mixture.

(d(ii))[1]

What should be used in place of a Bunsen burner?

(e)[2]

Suggest why pentane is collected in the conical flask before hexane.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: A fractionating column

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