DP Chemistry (last assessment 2024)

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Question 19M.3.sl.TZ2.c

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.3.sl.TZ2.c
Level sl Paper 3 Time zone TZ2
Command term Outline Question number c Adapted from N/A
c.
[Maximum mark: 1]
19M.3.sl.TZ2.c

A student synthesized aspirin, acetylsalicylic acid, in a school laboratory.

Outline how aspirin can be chemically modified to increase its solubility in water.

[1]

Markscheme

convert to a salt
OR
react with sodium hydroxide/NaOH  [✔]

 

Note: Accept other reactions forming soluble salts.

Accept “to ionize” but not “more polar”.

Examiners report

This question was reasonably answered by most students although some candidates confused the modification of aspirin into an ionic salt with the modification of the side chain of penicillin.

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