For each of the following electrochemical cells, calculate the Eo, write the balanced cell reaction equation and identify what is being oxidized and reduced, and calculate the Q and Ecell. Note that the substances with M given are in solution. All other substances are solids.
a. Cd (s)| Cd(NO3)2 (1.24 M) || FeCl2 (0.500 M), FeCl3 (0.750 M) | Pt (s)
b. Ag, Ag2CrO4 (s)| Na2CrO4 (2.00 M) || Mn(NO3)2 (0.100 M), HNO3 (2.00 M) | MnO2, Pt(s)