Which of the following reaction occur du...

Which of the following reaction occur during the electrolysis of `CuSO_4` solution using copper electrodes?

A

`Cu to Cu^(+2) + 2e^(-)`

B

`2SO_4^(2-) + 2H_2O to 2H_2SO_4 + O_2`

C

`Cu^(+2) + 2e^(-) to Cu`

D

`2H^(+) + 2e^(-) to He `

Text Solution

Verified by Experts

The correct Answer is:

A, C

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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Knowledge Check

Which one of the following reactions cannot occur ?

A

`Cu+ ZnSO_4 rarr CuSO_4 + Zn darr `

B

`Cu+ 2AgNO_3 rarr Cu(NO_3)_2 + 2Ag darr`

C

`Cu+FeSO_4 rarrr CuSO_4 + Fe darr`

D

`3Ag + AuCl_3 rarr 3AgCl + Au darr`

Which of the following occurs reaction intermediate?

A

Free radicals

B

Carbocations

C

Carbanions

D

All

Which one of the following reactions does not occur ?

A

`BaO+O_(3)rarr BaO_(2)+O_(2)`

B

`PbS+4O_(3)rarr PbSO_(4)+4O_(2)`

C

`H_(2)O_(2)+O_(3)rarr H_(2)O+2O_(2)`

D

`2Hg+O_(3)rarr Hg_(2)O+O_(2)`

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