During the electroplating of copper in the copper sulphate solution, _____________ remains constant.

concentration of copper sulphate solution

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mass of cathode

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mass of anode

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None of the above

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Solution

The correct option is A concentration of copper sulphate solution
During the electroplating of copper from copper sulphate solution, the concentration of the electrolyte (copper sulphate solution) remains constant. The reaction will not complete if all the copper is lost from the solution and an equal amount of copper from the positive electrode gets dissolved in the solution.
At the same time, the mass of anode reduces while the mass of cathode reduces.

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