First slide

Faraday's Laws

Question

What current is to be passed for 0.25 s for deposition of a certain weight of metal which is equal to its electrochemical equivalent ?

Easy

Solution

From Faraday's laws:
$w = \frac{{Eit}}{F}$

Given that w = Z ( e.c.e )
$Z = \frac{{Eit}}{F}$

but we know Z x F = E
$E = Eit \Rightarrow it = 1 \Rightarrow i = \frac{1}{t} = \frac{1}{{0.25}} = 4amp$

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