First slide

Faraday's Laws

Question

The quantity of charge required to obtain one mole of aluminium from Al₂O₃ is

Easy

A

1 F
B

6 F
C

3 F
D

2 F

Solution

The quantity of charge required to obtain one mole of aluminium from Al₂O₃is equal to number of electrons required to convert Al₂O₃ to Al.
${Al}^{3 +} (aq) \overset{+ 3 e}{⟶} Al (s)$
Hence, total 3F is required.

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