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When `CuSO_(4)` is electrolysed, using Pt electrodesA. copper is deposited at cathode, sulpher is liberates at anodeB. copper is deposited at cathode, oxygen gas is liberated at andoeC. oxygen gas is liberated at cathode, copper is deposited at anodeD. sulphur is deposited at cathode, oxygen gas is liberated at anode |
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Answer» Correct Answer - B Unless it is specified, we assume the solution to be concentrated. At cathode, copper is deposited on account of higher reduction potential: `Cu^(2+) + 2e^(-) rarr Cu` At anode, `O_(2)` gas is liberated on a account of lower reduction potential of water: `2H_(2)O rarr O_(2) + 4H^(+) + 4e^(-)` |
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