DP Chemistry (last assessment 2024)

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Question 20N.2.hl.TZ0.2e

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Date November 2020 Marks available [Maximum mark: 2] Reference code 20N.2.hl.TZ0.2e
Level hl Paper 2 Time zone TZ0
Command term Draw Question number e Adapted from N/A
e.
[Maximum mark: 2]
20N.2.hl.TZ0.2e

Compound A is in equilibrium with compound B.

(e)

Compound A and B are isomers. Draw two other structural isomers with the formula C3H6O.

[2]

Markscheme

Accept any two C3H6O isomers except for propanone and propen-2-ol:

✔✔

 

Penalize missing hydrogens in displayed structural formulas once only.

Examiners report

A surprising number of candidates drew propanone here as an option, either failing to read the question or perhaps finding the structural formulae provided difficult to understand.

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