For a Ag-Zn button cell, the net reaction is `Zn (s)+Ag_(2)O(s)rarrZnO(s)+2Ag(s)` `DeltaG_(f)^(@)(Ag_(2)O)=-11.21kJ "mol"^(-1)` and `DeltaG_(f)^(@)(ZnO)=-318.3kJ "mol"^(-1)` The `E_("cell")^ (@)` of this button cell isA. 1.71VB. 1.591VC. 3.182VD. 3.07V

For a Ag-Zn button cell, the net reaction is `Zn (s)+Ag_(2)O(s)rarrZnO

1.	For a Ag-Zn button cell, the net reaction is `Zn (s)+Ag_(2)O(s)rarrZnO(s)+2Ag(s)` `DeltaG_(f)^(@)(Ag_(2)O)=-11.21kJ "mol"^(-1)` and `DeltaG_(f)^(@)(ZnO)=-318.3kJ "mol"^(-1)` The `E_("cell")^ (@)` of this button cell isA. 1.71VB. 1.591VC. 3.182VD. 3.07V
Answer» Correct Answer - b `DeltaG_("reaction")^(@)=DeltaG_(f)^(@)(ZnO)-DeltaG^(@)(Ag_(2)O)` `=-3.18.3+11.21` `=-30.09xx10^(2)J` `DeltaG^(@)= -nE^(@)F` `therefore E^(@)=(-DeltaG^(@))/(nF)` Here n=2 `therefore E^(@)=(+3.07.09xx10^(3))/(2xx96500)=1.591V`

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For a Ag-Zn button cell, the net reaction is `Zn (s)+Ag_(2)O(s)rarrZnO(s)+2Ag(s)` `DeltaG_(f)^(@)(Ag_(2)O)=-11.21kJ "mol"^(-1)` and `DeltaG_(f)^(@)(ZnO)=-318.3kJ "mol"^(-1)` The `E_("cell")^ (@)` of this button cell isA. 1.71VB. 1.591VC. 3.182VD. 3.07V

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