Aluminium oxide may be electrolysed at 1000oC to furnish aluminium metal (Atomic mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is Al3+ + 3e- $\to$ Alo To prepare 5.12 kg of aluminium metal by this method would require

Question

Aluminium oxide may be electrolysed at 1000^oC to furnish aluminium metal (Atomic mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is Al³⁺ + 3e^- $\to$ Al^o To prepare 5.12 kg of aluminium metal by this method would require

5.49 $\times$ 10⁷ C of electricity

1.83 $\times$ 10⁷ C of electricity

5.49 $\times$ 10⁴ C of electricity

5.49 $\times$ 10¹ C of electricity

Solution

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