a. write the cell notation for, and balance, the reaction:
Co3+(aq) + Zn(s) --> Co2+(aq) + Zn2+ (aq)
Okay, here I think that the reduction occured at the cathode:
Co3+(aq) + 1e- --> Co2+ (aq)
And the oxidation takes place at the anode:
Zn(s)--> Zn2+(aq) + 2e-
So should the cell notation be...