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. Platimus 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. Platimus sulphateB. Copper hydroxideC. copper sulphateD. sulphuric acid
Answer» Correct Answer - D During electrolysis of `CuSO_(4).Cu^(2+)` gets discharged cathode and `OH^(-)` at anode. Tghus solution becomes acidic dur 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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