A-LevelChemistryCarboxylic acids and derivativesMay/June 2025Paper 1 Q271 Mark

Methanoic acid, HCO2H, has acidic properties similar to those of other carboxylic acids. In addition, it can be oxidised by the same oxidising agents that are capable of oxidising aldehydes. Which pair consists of two compounds that will give the same observations with Fehling's reagent?

Q: What is the correct answer to this A-Level Chemistry question?

The correct answer is D: HCO2H and CH3CH2CHO.

Q: What topic does this question test?

This question tests Carboxylic acids and derivatives in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

AHCO2H and CH3CO2H

BHCO2H and CH3CO2CH3

CHCO2H and CH3CH2COCH3

DHCO2H and CH3CH2CHO

✓ Correct Answer

The correct answer is D: HCO2H and CH3CH2CHO

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Chemistry Question

Topic

This multiple-choice question tests Carboxylic acids and derivatives in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Chemistry May/June 2025 examination, Paper 1 Variant 2.

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