A-LevelChemistryCarboxylic acids and derivativesOct/Nov 2023Paper 1 Q371 Mark

Three equations are shown. 1 CH3COOH + MgCO3 → CH3COOMg + CO2 + H2O 2 CH3CH2COOH + Na → CH3CH2COONa + ½H2 3 CH3CH2COOH + 2Ba(OH)2 → CH3CH2COOBa2 + 2H2O Which of the equations are correct?

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

The correct answer is C: 2 only.

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.

A1, 2 and 3

B1 and 2 only

C2 only

D3 only

✓ Correct Answer

The correct answer is C: 2 only

📋 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 Oct/Nov 2023 examination, Paper 1 Variant 2.

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