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A current of 12 A is passed through an e...

A current of 12 A is passed through an electrolytic cell containing aqueous `NiSO_4` solution. Both Ni and `H_2` gas are formed at the cathode. The current efficiency is 60%. What is the mass of nickel deposited on the cathode per hour?

A

`(7.883g)`

B

`(3.941g)`

C

`(5.91g)`

D

`(2.645)`

Text Solution

Verified by Experts

The correct Answer is:
A
Electricity passed in one hour =` 12xx3600C`
Electricity used to deposit `Ni = 0.6 xx12xx3600C`
`Ni^(2+) + 2e^(-) rightarrow Ni` `therefore` `2xx96500C` produces 1 mol or 58.7 gNi
`0.6 xx12xx3600C` produces = `(58.7)/(2xx96500) xx0.6 xx12xx3600 = 7.883 gm`
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