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Extraction of Aluminium

State the rea...

Question

State the reason for a difference in the product formed at the anode during electrolysis of aq. $C u S O_{4}$ solution using platinum anode.

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Solution

At cathode:
$C u^{+ 2} + 2 e^{-} \to C u$
At anode:
$2 H_{2} O \to O_{2} + 4 H^{+} + 4 e^{-}$

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