A-LevelChemistryAtoms, molecules and stoichiometryFeb/Mar 2018Paper 1 Q61 Mark

Sodium hydroxide neutralises acid. H⁺ + OH⁻ → H₂O In a 11000 dm³ sample of an aqueous solution, the concentration of acid, [H⁺], is 1.26 x 10⁻³ mol dm⁻³. Which mass of solid sodium hydroxide neutralises the acid?

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

The correct answer is D: 554 g.

Q: What topic does this question test?

This question tests Atoms, molecules and stoichiometry in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

A0.0214 g

B0.0504 g

C236 g

D554 g

✓ Correct Answer

The correct answer is D: 554 g

📋 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 Atoms, molecules and stoichiometry in A-Level Chemistry (syllabus code 9701). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Chemistry Feb/Mar 2018 examination, Paper 1 Variant 2.

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