A-LevelChemistryReaction kineticsOct/Nov 2010Paper 1 Q21 Mark

Which diagram correctly represents the Boltzmann distribution of molecular energies at two temperatures T₁ and T₂, where T₁ = 300K and T₂ = 310K?

Q: What topic does this question test?

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

A[Diagram A showing Boltzmann distribution curve with T1 peak higher and to the left of T2 peak]

B[Diagram B showing Boltzmann distribution curve with T2 peak lower and to the right of T1 peak]

C[Diagram C showing Boltzmann distribution curve with T2 peak higher and to the left of T1 peak]

D[Diagram D showing Boltzmann distribution curve with T1 peak lower and to the right of T2 peak]

✓ Correct Answer

The correct answer is B: [Diagram B showing Boltzmann distribution curve with T2 peak lower and to the right of T1 peak]

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

Source

This question appeared in the Cambridge A-Level Chemistry Oct/Nov 2010 examination, Paper 1 Variant 2.

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