(B) During the electrolysis of an aqueous solution of copper sulphate $(CuSO_4)$ using copper electrodes,both $Cu^{2+}$ and $H^{+}$ ions move towards

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

(B) During the electrolysis of an aqueous solution of copper sulphate $(CuSO_4)$ using copper electrodes,both $Cu^{2+}$ and $H^{+}$ ions move towards the cathode. Since the reduction potential of $Cu^{2+}$ $(+0.34 \ V)$ is higher than that of $H^{+}$ $(0.00 \ V)$,$Cu^{2+}$ ions are preferentially reduced at the cathode. The reaction at the cathode is: $Cu^{2+}_{(aq)} + 2e^- \longrightarrow Cu_{(s)}$

Class 11 Chemistry Data Entry - Chemistry Level 0 of all question bank

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

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A
$Cu_{(s)} \longrightarrow Cu^{2+}_{(aq)} + 2e^-$
B
$Cu^{2+}_{(aq)} + 2e^- \longrightarrow Cu_{(s)}$
C
$H^{+}_{(aq)} + e^- \longrightarrow \frac{1}{2} H_{2(g)}$
D
$SO_4^{2-}{_{\text{(aq)}}} \rightarrow SO_{3\text{(g)}} + \frac{1}{2}O_{2\text{(g)}} + 2e^{-}$