DP Chemistry (first assessment 2025)

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Question 22M.1A.HL.TZ1.29

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.HL.TZ1.29
Level HL Paper 1A Time zone TZ1
Command term Deduce Question number 29 Adapted from N/A
29.
[Maximum mark: 1]
22M.1A.HL.TZ1.29

Which compound produces this mass spectrum?

[Spectral Database for Organic Compounds, SDBS. SDBS Compounds and Spectral Search. [graph] Available at:
https://sdbs.db.aist.go.jp [Accessed 3 January 2019].]

 

[1]

Markscheme

C

Examiners report

Question 29 contained a mass spectrum and 44% of students chose the correct answer of C - ethanoic acid. There were comments that this was unfair without access to the data booklet. However, as the other molecules are clearly wrong this did not seem so difficult to do without the data booklet as they did have the periodic table.

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