A hyptherical electrochemical cell is given as `A^(Ө)|A^+ (xM) || B^+ (yM) | B^(Ө)` The emf masured is `+ 0. 20 V`. The cell reaction is .

A hypothetical elecrochemical cell is shown below: A^(ɵ)|A^(+)(xM)||B^(+)(yM)||B^(o+) The emf measured is +0.20 V . The cell reaction is

A hypothetical elecrochemical cell is shown below: A^(ɵ)|A^(+)(xM)||B^(+)(yM)||B^(o+) The emf measured is +0.20 V . The cell reaction is

A hypothetical electrochemical cell is shown below. A|A^(+)(xM)||B^(+)(yM)|B^(+) The e.m.g. measured is 0.20V the cell reaction is

A hypothetical electrochemical cell is shown below ThetaPt(s)|A_(2)(1 atm)|A^(-)(xM)||B^(+)(yM)|B(s)^(o+) The emf measured is 0.30V The cell reaction is :-

Define electrochemical cell, emf reaction.