Why the blue colour of CuSO4 turns colourless during electrolysis of CuSO4 solution by platinum electrode.

Why the blue colour of CuSO4 turns colourless during electrolysis of CuSO4 solution by platinum electrode.
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Answer :

The platinum electrodes are inert. Hence does not dissolve into the solution. The Cu++ ions (blue) present in the solution are discharged on the surface of cathode & OH – are discharged on the surface of anode while H+ and SO4 2- ions remains in the solution. As a result of this electrolysis, blue coloured CuSO4 solution is slowly converted into colorless H2SO4 solution.
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