Question

Aluminium oxide may be electrolysed at 1000°C to furnish aluminium metal (At. Mass = 27amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is
Al³⁺ + 3e^- → Al⁰
To prepare 5.12kg of aluminium metal by this method would require
(a) 5.49 × 10⁷C of electricity
(b) 1.83 × 10⁷C of electricity
(c) 5.49 × 10⁴C of electricity
(d) 5.49 × 10¹⁰C of electricity

Answer 1

(a) : From Faraday's 1st law

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