Deduced from the following E∘ values of half cells, what combination of two half cells would result in a cell with the largest potential?
(i) A3−→A2−+e;E∘=1.5V (ii) B2++e→B+;E∘=2.1V
(iii) C2++e→C+;E∘=+0.5V (iv) D→D2++2e;E∘=−1.5V
(i) and (ii)
E∘of(B)>E∘ of (A) so, (B) is at cathode and (A) is at anode