A-LevelChemistryEquilibriaMay/June 2013Paper 1 Q81 Mark

The reaction between sulfur dioxide and oxygen is a dynamic equilibrium. 2SO₂(g) + O₂(g) ⇌ 2SO₃(g) What happens when the pressure of the system is increased?

Q: What topic does this question test?

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

AThe rate of reaction will decrease and the position of the equilibrium will move to the left.

BThe rate of reaction will decrease and the position of the equilibrium will move to the right.

CThe rate of reaction will increase and the position of the equilibrium will move to the left.

DThe rate of reaction will increase and the position of the equilibrium will move to the right.

✓ Correct Answer

The correct answer is D: The rate of reaction will increase and the position of the equilibrium will move to the right.

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

Source

This question appeared in the Cambridge A-Level Chemistry May/June 2013 examination, Paper 1 Variant 2.

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