DP Chemistry (last assessment 2024)

Test builder »

Question 22N.1.hl.TZ0.40

Select a Test
Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.hl.TZ0.40
Level hl Paper 1 Time zone TZ0
Command term Deduce Question number 40 Adapted from N/A
40.
[Maximum mark: 1]
22N.1.hl.TZ0.40

Which organic compound has the 1H NMR shown?

Source: Spectral Database for Organic Compounds, SDBS, n.d. [online] Available at:
https://sdbs.db.aist.go.jp/sdbs/cgi-bin/direct_frame_top.cgi [Accessed 6 October 2021].


A.  Methanal

B.  Ethanoic acid

C.  Methyl ethanoate

D.  Propanoic acid

[1]

Markscheme

D

Examiners report

Just under 70% of the candidates identified the 1H NMR spectrum as being that of propanoic acid. The most commonly mistakes were thinking it was ethanoic acid (B) or methyl ethanoate (C).

Syllabus sections