A-LevelChemistryCarbonyl compoundsOct/Nov 2012Paper 1 Q281 Mark

In 1903 Arthur Lapworth became the first chemist to investigate a reaction mechanism. The reaction he investigated was that of hydrogen cyanide with propanone. What do we now call the mechanism of this reaction?

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

The correct answer is C: nucleophilic addition.

Q: What topic does this question test?

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

Aelectrophilic addition

Belectrophilic substitution

Cnucleophilic addition

Dnucleophilic substitution

✓ Correct Answer

The correct answer is C: nucleophilic addition

📋 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.

🔒

Unlock the Examiner's Analysis

Join thousands of Cambridge students already using Oracle Prep

About This A-Level Chemistry Question

Topic

This multiple-choice question tests Carbonyl 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 2012 examination, Paper 1 Variant 2.

Practice on Oracle Prep

Oracle Prep provides AI-powered practice for all Cambridge O-Level and A-Level subjects. Our platform includes topic predictions with 87.7% accuracy, AI essay grading, and a comprehensive question bank spanning 25 years of past papers across 29 subjects.