Two platinum electrodes were immersed in a solution of `CuSO_(4)` and electric current was passed through the solution. After some time, it was found that colour of `CuSO_(4)` disappeared with evolution of gas at the electrode. The colourless solution contains.A. Plantinum sulphateB. copper hydroxideC. copper sulphateD. sulphuric acid

Two platinum electrodes were immersed in a solution of `CuSO_(4)` and

1.	Two platinum electrodes were immersed in a solution of `CuSO_(4)` and electric current was passed through the solution. After some time, it was found that colour of `CuSO_(4)` disappeared with evolution of gas at the electrode. The colourless solution contains.A. Plantinum sulphateB. copper hydroxideC. copper sulphateD. sulphuric acid
Answer» Correct Answer - D During electrolysis of `CuSO_(4) , Cu^(2+)` gets discharged at cathode and `OH^(-)` at anode . Thus solution becomes acidic due to excess of `H^(+)` and `SO_(4)^(2-) or H_(2)SO_(4)` .

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What are elementary reactions ?

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