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A copper refining cell consists of two p...

A copper refining cell consists of two parallel copper plate electrodes 5 cm apart and 1 metre squre, immersed in a copper sulphate solution of resistivity `12xx10^(-2)Omegam`. Then the potential difference which must be established between the plates to provide a constant current to deposit `0.66kg` of copper on cathode in one hour is nearly `(Z=3.33xx10^(-7)kg//C)`

A

0.6V

B

0.33V

C

3.0V

D

15V

Text Solution

Verified by Experts

`m=Zit=Z((V)/(R))t`
`rARr V=(mR)/(Zt)=(mrhol)/(Zat)`
`=(0.66xx1.2xx10^(-2)xx5xx10^(-2))/(3.33xx10^(-7)xx1xx60xx60)`
=0.33 volt
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