Skip to main content
A-LevelChemistryOrganic synthesis9701/12 · Feb/Mar 2024 · Q381 Mark

Hydroxyethanal, HOCH₂CHO, is heated under reflux with an excess of acidified K₂Cr₂O₇ until no further oxidation takes place. What is the skeletal formula of the organic product?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

A[skeletal formula of HOOC-COOH]
B[skeletal formula of HOCH₂COOH]
C[skeletal formula of OHC-COOH]
D[skeletal formula of CH₃CH₂COOH]

✓ Correct answer

B: [skeletal formula of HOCH₂COOH]

Practise more questions on this topic

Oracle Prep sorts past-paper questions by topic, so you can drill Organic synthesis and see which topics are most likely to come up next.

Sign up free →

About this question

Topic
Organic synthesis, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, Feb/Mar 2024 Paper 1 Variant 2, question 38.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Chemistry questions

© 2026 Oracle Prep