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A galvanic cell is set up from a zinc ba...

A galvanic cell is set up from a zinc bar weighting 100 g and 1.0 L of 1.0 M `CuSO_(4)` solution. How long would the cell run assuming it delivers a steady current of 1.0 amp ?

A

`1.1` hours

B

46 hours

C

`53.6` hourse

D

24 hours.

Text Solution

Verified by Experts

The correct Answer is:
c
Mole of `Zn=(100)/(65.3)=1.53mol`
Mole of `Cu^(2+)=1xx1=1 mol `
So `Zn` is in excess, hence `Cu^(2+)` will react completely.
`Cu^(2+)+2e^(-) rarr Cu`
`2F-=1 mol `of `Cu`
`2xx96500C-=1.0Axxt(` in seconds `)`
`t=(2xx96500)/(3600)h=53.6h`
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