I'm facing problem with part(b) of this question:
Here are the Electrode potential values of half cells that are being used:
There are many ways of finding the Electrode potential of an electrochemical cell, by using different formulas. But I prefer to add up the electrode potentials of two half cells after reversing the sign of the electrode potential of the half cell that is shifting towards the left hand side of the equation. The equilibrium with more positive E naught value shifts to the right and and less positive(or more negative) one shifts to the left.
So if I apply the same concept here, the reactions are occurring in opposite direction to what E naught values predict, so I get negative Cell electrode potential values. Mark scheme just subtracts the electrode potential value of reaction at cathode from electrode potential values of reactions at anode.
Where am I going wrong?