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Aluminium oxide may be electrolysed at 1...

Aluminium oxide may be electrolysed at `1000^(@)`C to furnish aluminium metal (Atomic mass = 27 amu, 1 Faraday = 96500 Coulomb). The cathode reaction is `Al^(3+) + 3e^(-) rightarrow Al`. To prepare 5.12 kg of aluminium metal by this method would require:

A

`5.49 xx 10^(7)` C of electricity

B

`1.83 xx 10^(7)` C of electricity

C

`5.49 xx 10^(4)` C of electricity

D

`5.49 xx 10^(10)` C of electricity

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The correct Answer is:
A
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