ChemistryOxidation and reductionWAEC
Zinc dust added to blue copper(II) tetraoxosulphate(VI) solution reacts as Zn + Cu²⁺ → Zn²⁺ + Cu. Which species is reduced?
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Answer: A. the copper(II) ion
Cu²⁺ gains two electrons to become Cu, so it is reduced; zinc is oxidised.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.