Drawing and naming esters

3 marks · Easy

When butanol reacts with ethanoic acid:

(a)

Write the name of the ester produced.

[1 mark]

(b)

Draw the full structural formula for the ester.

[2 marks]

Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.

Show answer

(a) Butyl ethanoate

(b) CH3COO(CH2)3CH3 (diagram with correct bonds and connectivity) · must show Correct carbon chain, Ester linkage drawn

Show mark scheme and worked solution

Marking points

F1 (a) · 1 mark · Correctly names the ester: butyl ethanoate.

F2 (b) · 2 marks · Fully correct structural formula showing all bonds and the OCO linkage. Allow either orientation (acid group left or right). 1 mark for correct structure without bonds, 2 marks for full correctness including all atoms, bonds, connections.

Worked solution

a) The ester is butyl ethanoate.

b) The structure is CH3COOCH2CH2CH2CH3. Drawing shows the ester linkage connecting the ethanoate and butyl groups.