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Calculate the maximum work that can be o...

Calculate the maximum work that can be obtained from the decimolar Daniell cell at `25^(@)C`.
Given `E^(c-)._((Zn^(2+)|Zn))=-0.76V` and `E^(c-)._((Cu^(2+)|Cu))=0.34V`

A

`193.0k J`

B

`212.3kJ`

C

`81.06kJ`

D

`40.53kJ`

Text Solution

Verified by Experts

The correct Answer is:
B
Decimolar Daniell cell is represented below `:`
`Zn(s)|Zn^(2+)(0.1M)||Cu^(2+)(0.1M)|Cu(s)`
`E^(c-)._(cell)=(E^(c-)._(c)-E^(c-)._(a))_(red)=0.34-(-0.76)=1.10V`
`E_(cell)=E^(c-)._(cell)-(0.059)/(2)log.([Zn^(2+)])/([Cu^(2+)])`
`=1.10V-(0.059)/(2)log .(0.1)/(0.1)=1.10V`
`W_(max)=-DeltaG=nFE_(cell)=xx96500xx1.10`
`=212300J=212.3kJ`
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