Indicate whether the following half cells behave as an anode or a cathode when they are are coupled to a standard hydrogen electrode in a galvanic cell. Calculate also the potential of the cell: a. Pt|Ti3+ (0.300 M),TiO2+ (0.100 M),H+ (0.200 M) b. Bi|BiCl4-(0.010 M),Cl-(0.500 M) c. Ag|AgNO3 (0.0100 M),Na2S2O3 (0.200 M) E(TiO2+,Ti3+) = 0.099 V; E(Ag(S2O3)23-,Ag) = 0.017 V, E(BiCl4-,Bi)= 0.16 V