Two platinum electrodes were immersed in a solution of CuSO4 and electric current was passed through the solution. After some time, it was found that colour of CuSO4 disappeared with the evolution of

Question

Two platinum electrodes were immersed in a solution of CuSO4 and electric current was passed through the solution. After some time, it was found that colour of CuSO4 disappeared with the evolution of gas at the electrode. The colourless solution contains

Prashant Kotian · Accepted Answer

Correct answer: D. During electrolysis, Cu2+ ions reduce to Cu at the cathode (removing the blue color) and water oxidizes to O2 at the anode, releasing H+ ions. The solution is thus left with H+ and SO4^2- ions, which form sulphuric acid. Therefore, correct answer is D.

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