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An aqueous solution of nickel (II) sulph...

An aqueous solution of nickel (II) sulphate was electrolysed using nickel electrodes. Observe the diagram and answer the questions that follow :

Which equation for the reaction at the anode is correct?

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
At cathode reduction takes place and deposition of `Ni` takes place as `Ni^(2+)` ions from solution convert to Ni metal.
`Ni^(2+) + 2e^(-) to Ni`
At anode oxidation takes place and Ni metal converts to `Ni^(2+)` ions
`Ni to Ni^(2+) + 2e^(-)`
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