The Edison storage cell is represented as, `Fe_((s))|FeO_(S)||KOH_((a
Channel: Doubtnut
Date: 2020-02-16

The Edison storage cell is represented as, `Fe_((s))|FeO_(S)||KOH_((aq.))||Ni_(2)O_(3(S))|No_((S))` the half-cell reactions are : `Ni_(2)O_(3(S))+H_(2)O_((l))+2e^(-)rarr 2NiO_((S))+2OH^(-) , E^(@)=+0.40V` `FeO_((S))+H_(2)O_((I))+2e^(-)rarr Fe_((S))+2OH^(-) , E^(@)=-0.87V` (i) What is the cell reaction ? (ii) What is the cell e.m.f. ? How does ir depend on the concentration of KOH ? (iii) What is the maximum amount of electrical energy that can be obtained from one mole of `Ni_(2)O_(3)` ?