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# How much electricity in terms of Faraday is required

3.13    How much electricity in terms of Faraday is required to produce

(ii)40.0 g of AI from molten $AI_{2}O_{3}$ ?

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The equation for the given question is :-

$Al^{+3}\ + 3e^-\ =\ Al$

Thus for 1 mol of Al, charge required is 3F.

So the required amount of electricity in terms of charge will be :-

$=\ \frac{3}{27}\times40F = 4.44F$

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