DP Chemistry (last assessment 2024)

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Question 22N.2.hl.TZ0.6d

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.2.hl.TZ0.6d
Level hl Paper 2 Time zone TZ0
Command term Identify Question number d Adapted from N/A
d.
[Maximum mark: 1]
22N.2.hl.TZ0.6d

2-Bromobutane can react with cyanide, CN−, in a nucleophilic substitution reaction.

(d)

SN1 and SN2 reactions are better conducted using different types of solvents. Identify two properties of a solvent most suited for the mechanism proposed in (b).

[1]

Markscheme

aprotic AND polar ✔

Examiners report

Only about half the students were aware of the protic and polar nature of preferred solvents correlating to the mechanism identified in 6(b).

Syllabus sections