1.

Which of the following reaction occur during the electrolysis of CuSO_4 solution using copperelectrodes?

Answer»

`Cu to Cu^(+2) + 2e^(-)`
`2SO_4^(2-) + 2H_2O to 2H_2SO_4 + O_2`
`Cu^(+2) + 2e^(-) to Cu`
`2H^(+) + 2e^(-) to He `

SOLUTION :at anode : oxidation takes place i.e. [ loss of electrons ]
at cathode : reduction takes place i.e. [ GAIN of electrons]
`Cu to Cu^(+2) + 2e^(-)`


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