DP Chemistry (last assessment 2024)

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Question 22N.1.sl.TZ0.30

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.sl.TZ0.30
Level sl Paper 1 Time zone TZ0
Command term Deduce Question number 30 Adapted from N/A
30.
[Maximum mark: 1]
22N.1.sl.TZ0.30

What information about 2-hydroxybutanoic acid can be inferred through mass spectrometry, MS, infrared spectroscopy, IR, and proton nuclear magnetic resonance spectroscopy, 1H NMR?


[1]

Markscheme

A

Examiners report

65% of the candidates identified the information obtained from MS, IR and 1H NMR spectroscopy about 2-hydroxybutanoic acid. The question discriminated well between high-scoring and low-scoring candidates.

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