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Which process occurs in the electrolysis of aqueous solution of nickel chloride at nickel anode?

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$2 H^{+} + 2 e ⟶ H_{2}$

${Ni}^{2 +} + 2 e ⟶ Ni$

$2 {Cl}^{-} \to {Cl}_{2} + 2 e^{-}$

$Ni ⟶ {Ni}^{2 +} + 2 e$

answer is D.

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Detailed Solution

When Nickel chloride is electrolysed by using Ni electrode, Ni electrode is an active electrode in this condition.
So, the reactions taking place are
$Anode : Ni \to {Ni}^{2 +} + 2 e^{-} Cathode : {Ni}^{2 +} + 2 e^{-} \to Ni$

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