DP Chemistry (last assessment 2024)

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Question 19M.2.hl.TZ1.2b

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.hl.TZ1.2b
Level hl Paper 2 Time zone TZ1
Command term Identify Question number b Adapted from N/A
b.
[Maximum mark: 1]
19M.2.hl.TZ1.2b

Benzoic acid, C6H5COOH, is another derivative of benzene.

(b)

Identify the spectroscopic technique that is used to measure the bond lengths in solid benzoic acid.

[1]

Markscheme

X-ray «crystallography/spectroscopy» [✔]

Examiners report

Less than half the candidates identified x-ray crystallography as a technique used to measure bond lengths. There were many stating IR spectroscopy and quite a few random guesses.

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