Question

When two half cells of electrode potential of e1 and e2 are combined to form a cell of electrode potential e3?

Answer 1

The standard electrode potentials for the following redox couples are given as: >E0(Fe2+/Fe)=x V and E0(Fe3+/Fe2+)=y V

What will be potential E0(Fe3+/Fe) (in V)?

My approach: Fe3++e−+Fe2++2e−⟶Fe2++Fe

So E0(Fe3+/Fe)=(x+y) V