(B) During the electrolysis of an aqueous solution of copper sulphate using copper electrodes,both $Cu^{2+}$ and $H^{+}$ ions move towards the cathode

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$Cu^{2+}_{(aq)} + 2e^{-} \longrightarrow Cu_{(s)}$

(B) During the electrolysis of an aqueous solution of copper sulphate using copper electrodes,both $Cu^{2+}$ and $H^{+}$ ions move towards the cathode. Since the reduction potential of $Cu^{2+}$ is higher than that of $H^{+}$,$Cu^{2+}$ ions are reduced in preference to $H^{+}$ ions. Thus,copper metal is deposited at the cathode according to the following reaction: $Cu^{2+}_{(aq)} + 2e^{-} \longrightarrow Cu_{(s)}$

Class 12 Chemistry Electrochemistry Electrolytes and Electrolysis

Easy

During the electrolysis of copper sulphate aqueous solution using copper electrodes,the reaction taking place at the cathode is:

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A
$Cu \longrightarrow Cu^{2+}_{(aq)} + 2e^{-}$
B
$Cu^{2+}_{(aq)} + 2e^{-} \longrightarrow Cu_{(s)}$
C
$H^{+}_{(aq)} + e^{-} \longrightarrow \frac{1}{2} H_{2(g)}$
D
$S{O_{4}}^{2-}_{(aq)} \longrightarrow SO_{3(g)} + \frac{1}{2} O_{2(g)} + 2e^{-}$