For each cell write the anode half reaction and the cathode half reaction. from the measured voltages, calculate the half-cell potentials for the lead and tin half-cells and the equilibrium constants for these two reactions. in these calculations, use e° = 0.34 v for the cu2+/cu couple.
cells:
cu/cu^2+ and pb/pb^2+: 0.506 v
cu/cu^2+ and sn/sn^2+: 0.689 v
pb/pb^2+ and sn/sn^2+: 0.190 v