Question:medium

Electrolysis of aqueous copper (II) sulphate between Pt electrodes gives 'X' at anode and 'Y' at cathode. X and Y are respectively

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Key Rule: At the anode, if the anion contains oxygen (like \(\text{SO}_4^{2-}, \text{NO}_3^-\)), it is generally not oxidised; instead, water is oxidised to \(\text{O}_2\). At the cathode, metals below Hydrogen in the activity series (Cu, Ag, Au) are deposited preferentially over \(\text{H}_2\).

Updated On: Mar 26, 2026

\(\text{Cu, O}_2\)
\(\text{O}_2, \text{Cu}\)
\(\text{SO}_2, \text{H}_2\)
\(\text{O}_2, \text{H}_2\)

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The Correct Option is B

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