Chemistry 5070 · O Level · Fuels

Fuels — practice question

A student is separating petroleum. Fig. 1.1 illustrates how the student has set up the apparatus. Fig. 1.1 labels: thermometer, water out, water in, conical flask, petroleum, heat. Apparatus A is marked on the condenser.
(a)[1]

State the name of the apparatus labelled A in Fig. 1.1.

(b)[1]

The student makes a mistake while setting up the apparatus. Describe this mistake.

(c(i))[1]

When it has been assembled correctly, the apparatus shown in Fig. 1.1 is used to separate petroleum into useful substances. State the name of this separation process.

(c(ii))[1]

State the property of these substances that makes separation possible.

(d)[2]

State the name of the piece of apparatus the student uses to safely heat the petroleum in Fig. 1.1. Explain why this piece of apparatus is suitable.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: either a Liebig condenser or a water condenser

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