A-LevelChemistryHalogen derivativesMay/June 2014Paper 1 Q241 Mark

Ethene reacts with aqueous bromine to give two products, CH2BrCH2Br and CH2BrCH2OH. Which statement about these products is correct?

Q: What topic does this question test?

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

ABoth products are obtained in this reaction by electrophilic substitution.

BBoth products are obtained in this reaction by nucleophilic addition.

CBoth products can be hydrolysed to form the same organic compound.

DBoth products can form hydrogen bonds with water.

✓ Correct Answer

The correct answer is C: Both products can be hydrolysed to form the same organic compound.

📋 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 Halogen 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 2014 examination, Paper 1 Variant 2.

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