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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` |
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Answer» Correct Answer - 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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