ChemistryElectrolysisWAEC
How many faradays are needed to deposit one mole of aluminium from Al³⁺ ions?
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Answer: B. 3
Al³⁺ + 3e⁻ → Al, so 3 moles of electrons (3 F) are needed.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.