E_(1),E_(2) andE_(3) are the emf of the following three galvanciccells respectively (i) Zn(s)|Zn^(2+)(0.1 M)||Cu^(2+)(1 M)|Cu(s) (ii) Zn(s)|Zn^(2+)(1 M)||Cu^(2+)(1 M)|Cu(s) (iii) An(s)|An^(2+)(1 M)||Cu^(2+)(0.1 M)|Cu(s) Whichone of the following is true?

E_(1),E_(2) andE_(3) are the emf of the following three galvanciccells

1.	E_(1),E_(2) andE_(3) are the emf of the following three galvanciccells respectively (i) Zn(s)\|Zn^(2+)(0.1 M)\|\|Cu^(2+)(1 M)\|Cu(s) (ii) Zn(s)\|Zn^(2+)(1 M)\|\|Cu^(2+)(1 M)\|Cu(s) (iii) An(s)\|An^(2+)(1 M)\|\|Cu^(2+)(0.1 M)\|Cu(s) Whichone of the following is true?
Answer» `E_(2)gtE_(1)gtE_(3)` `E_(1)gtE_(2)gte_(3)` `E_(3)gtE_(1)gtE_(2)` `E_(3)gtE_(2)gtE_(1)` SOLUTION :`E_("cell") =E_("cell")^(@)-(0.0591)/(2) LOG [(Zn^(2+))/(CU^(2+))]` (i) `E_(1)=E_("cell")^(@)-(0.0591)/(2)log (Zn^(2+))/(Cu^(2+))` `I E_(1)=E_(cell)^(@)-(0.0591)/(2) log (1)/(0.1)` `ii E_(2) =E_(cell)^(@)-(0.0591)/(2)xx0=E_(cell)^(2)` `E_(3)=E_(cell)^(2)-(0.0591)/(2) log (0.1)/(1) E_(3) =E_(cell)^(@) +(0.591)/(2)` `E_(3)=E_(cell)^(@)+0.2955 thereforeE_(3) GT E_(2) LGT E_(1)`