A-LevelChemistryHydroxy compoundsOct/Nov 2017Paper 1 Q261 Mark

Many, but not all, organic reactions need to be heated before a reaction occurs. Which reaction occurs quickly at room temperature (20 °C)?

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

The correct answer is A: CH3OH + PCl5 → CH3Cl + POCl3 + HCl.

Q: What topic does this question test?

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

ACH3OH + PCl5 → CH3Cl + POCl3 + HCl

BCH3CH2Br + KCN → CH3CH2CN + KBr

CCH3CH2OH → C2H4 + H2O

DCH3CH2CN + 2H2O → CH3CH2CO2H + NH3

✓ Correct Answer

The correct answer is A: CH3OH + PCl5 → CH3Cl + POCl3 + HCl

📋 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 Hydroxy compounds in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Chemistry Oct/Nov 2017 examination, Paper 1 Variant 2.

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