Chemistry 9701 · AS & A Level · States of matter

States of matter — practice question

Aspartame is an artificial sweetener whose structure is shown here.
(a(i))[1]

Put a circle round every chiral centre in aspartame.

(a(ii))[2]

In the stomach, acid hydrolyses aspartame to give three organic products. On the diagram above, use arrows to show the two bonds that would be hydrolysed in the stomach.

(a(iii))[3]

Draw the structures of the three products obtained after complete acid hydrolysis of aspartame.

(b)[2]

Aspartame dissolves in water. By referring to aspartame’s structure, explain why it is soluble in water.

(c)[1]

Recently, nanotechnology has been used in developing a new natural sweetener, Nano Sugar, extracted from sugar cane. What is the approximate width of a nanoparticle?

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: Accurate structure drawn

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