DP Chemistry (first assessment 2025)

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Question 20N.1B.SL.TZ0.c

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1B.SL.TZ0.c
Level SL Paper 1B Time zone TZ0
Command term Suggest Question number c Adapted from N/A
c.
[Maximum mark: 1]
20N.1B.SL.TZ0.c

Non-polar solvents can be toxic. Suggest a modification to the experiment which allows the evaporated solvent to be collected.

[1]

Markscheme

distillation «instead of evaporation» ✔

Accept “pass vapour through a condenser and collect liquid”.

Do not accept “condensation” without experimental details.

Examiners report

A bit disappointing as the number of correct answers were substantially lower than expected. Many students responded using a fume hood or other method to remove the solvent. Once again this indicates a general misunderstanding about experimental methods.

Syllabus sections