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Question
State one relevant observation for the following:
At the anode when aqueous copper sulphate solution is electrolysed using copper electrodes.
Solution 1
Copper anode itself ionizes to give Cu2+ ions.
\[\ce{Cu - 2e- -> Cu^{2+}}\]
Solution 2
The anode slowly dissolves, but the colour of copper sulphate does not change. The copper anode ionises, producing Cu2+ ions that enter the CuSO4 solution. It accepts electrons to form Cu2+.
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