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What is discharged at the cathode during the electrolysis of...

What is discharged at the cathode during the electrolysis of copper (ll) tetraoxosulphate (VI) solution?

A.

Cu ²⁺ only

B.

H + only

C.

Cu ²⁺ and H

D.

Cu ²⁺ and SO ^2-

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Correct answer is A

No explanation has been provided for this answer.

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