Coding for branched chains

2 marks · Normal

Give the coded names for the following side chains in organic molecules:

(a)

A side chain with the formula

[1 mark]

(b)

A side chain with the formula

[1 mark]

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(a) methyl

(b) ethyl

Common mistakes: writing 'methane' or 'ethane' instead of 'methyl' and 'ethyl'

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Marking points

B1 (a) · 1 mark · Correctly identifies the side chain as 'methyl'.

B1 (b) · 1 mark · Correctly identifies the side chain as 'ethyl'.

Worked solution

a) The coded name for is 'methyl'.

b) The coded name for is 'ethyl'.