DP Chemistry (last assessment 2024)

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Question 19M.1.hl.TZ2.40

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.hl.TZ2.40
Level hl Paper 1 Time zone TZ2
Command term Question number 40 Adapted from N/A
40.
[Maximum mark: 1]
19M.1.hl.TZ2.40

Which technique involves breaking covalent bonds when carried out on an organic compound?

A. infrared spectroscopy

B. nuclear magnetic resonance spectroscopy

C. X-ray crystallography

D. mass spectrometry

[1]

Markscheme

D

Examiners report

This question challenged candidates to think about analytical techniques more deeply. 67 % of the candidates recognized that mass spectrometry involves breaking covalent bonds. The most commonly chosen distractor was X-ray crystallography (option C).

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