Why either of the sulphate ion or hydroxide ion is not discharged at copper electrodes during electrolysis of aqueous Copper (II) sulphate ?
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During electrolysis of aqueous copper sulphate using copper electrodes, the two anions OH– ( hydroxide ion ) and S042- ( sulphate ion ) migrate to the anode, but none of them get discharged because the copper of the anode dissolves in the solution producing copper ions and electrons.
Hence, OH– ( hydroxide ion ) and S042- ( sulphate ion ) remain as spectator ions.
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