DP Chemistry (last assessment 2024)

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Question 19N.3.hl.TZ0.24a

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.3.hl.TZ0.24a
Level hl Paper 3 Time zone TZ0
Command term Deduce Question number a Adapted from N/A
a.
[Maximum mark: 1]
19N.3.hl.TZ0.24a

Steroids are lipids with a steroidal backbone. The structure of cholesterol is shown in section 34 of the data booklet.

(a)

Infrared (IR) spectroscopy is used to identify functional groups in organic compounds.

Deduce the wavenumber, in cm−1, of an absorption peak found in the IR spectrum of testosterone but not in that of cholesterol.

[1]

Markscheme

1700−1750 «cm−1» ✔
NOTE: Accept a specific wavenumber value within range.

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