DP Chemistry (last assessment 2024)

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Question 19M.1.hl.TZ2.39

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.hl.TZ2.39
Level hl Paper 1 Time zone TZ2
Command term Question number 39 Adapted from N/A
39.
[Maximum mark: 1]
19M.1.hl.TZ2.39

What can be deduced from the infrared (IR) spectrum of a compound?

A. Number of hydrogens

B. Number of hydrogen environments

C. Bonds present

D. Molar mass

[1]

Markscheme

C

Examiners report

82 % of the candidates identified the bonds present as the information that can be deduced from an infrared spectrum. The most commonly chosen distractor was B (the number of hydrogen environments).

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