In the button cell, widely used in watches, the following reaction takes place `Zn(s)+Ag_(2)O(s)+H_(2)O to Zn^(2+)(aq)+2Ag(s)+2OH^(-)(aq)` Determine `E^(@)` and `DeltaG^(@)` for the reaction. (Given : `E_(Ag^(+)//Ag)^(@)=+0.80 V,E_(Zn^(2+)//Zn)^(@)=-0.76 V`

In the button cell, widely used in watches, the following reaction tak

1.	In the button cell, widely used in watches, the following reaction takes place `Zn(s)+Ag_(2)O(s)+H_(2)O to Zn^(2+)(aq)+2Ag(s)+2OH^(-)(aq)` Determine `E^(@)` and `DeltaG^(@)` for the reaction. (Given : `E_(Ag^(+)//Ag)^(@)=+0.80 V,E_(Zn^(2+)//Zn)^(@)=-0.76 V`
Answer» `"Anode: "Zn(s)toZn^(2+)(aq)+2e^(-)` `underline(" ""Cathode: "2Ag^(+)(aq)+2e^(-)to2Ag(s)" ")` `"Overall cell reaction :" " "Zn(s)+2Ag^(+)(aq)to Zn^(2+)(aq)+2Ag(s)` `E_(cell)^(@)=(E_(cathode)^(@)-E_(anode)^(@))=(+0.80 V)-(-0.76 V)=+1.56 V` `DeltaG^(@)=-"nF "E_(cell)^(@)=(-2)xx(965000 C)-(1.56 V)` `=-301080" CV"=-301080" J "mol^(-1)=-301.08" kJ"mol^(-1)`.

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In the button cell, widely used in watches, the following reaction takes place `Zn(s)+Ag_(2)O(s)+H_(2)O to Zn^(2+)(aq)+2Ag(s)+2OH^(-)(aq)` Determine `E^(@)` and `DeltaG^(@)` for the reaction. (Given : `E_(Ag^(+)//Ag)^(@)=+0.80 V,E_(Zn^(2+)//Zn)^(@)=-0.76 V`

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