You have six half-cells available (all solutions are 1 M). i) CuSO4 solution containing an electrode of Cu
ii) Cr2(SO4)3 solution containing an electrode of Cr
iii) MgSO4 solution containing an electrode of Mg
iv) ZnSO4 solution containing an electrode of Zn
v) AgNO3 solution containing an electrode of Ag
vi) FeSO4 solution containing an electrode of Fe
a) Which pair of half-cells will form the cell with the highest voltage?
b) Which pair of half-cells will form the cell with the lowest voltage?