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Electrolysis and Electrolytes

State the obs...

Question

State the observations at the anode and at the cathode during the electrolysis of:
Fused lead bromide using graphite electrodes.

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Solution

Electrolysis of fused lead bromide using graphite electrodes:
At anode, dark reddish brown fumes of bromine are obtained.
$2 B r^{-} \to B r_{2} + 2 e^{-}$
At cathode, greyish white lead metal is deposited.
$P b^{2 +} + 2 e^{-} \to P b$

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