A-LevelChemistryElectrochemistryFeb/Mar 2024Paper 1 Q111 Mark
One of the reactions in the rechargeable lead/acid battery is shown. Pb(s) + PbO₂(s) + 4H⁺(aq) + 2SO₄²⁻(aq) → 2PbSO₄(s) + 2H₂O(l) Which statement about this reaction is correct?
ALead is both oxidised and reduced.
BLead is neither oxidised nor reduced.
CLead is oxidised only.
DLead is reduced only.
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The correct answer is A. This question tests the candidate's understanding of electrochemistry within the Chemistrysyllabus. The examiner's mark scheme requires...
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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...
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