Please help, thanks. Use the table below to answer the questions that follow. Ha
ID: 901019 • Letter: P
Question
Please help, thanks.
Use the table below to answer the questions that follow.
Half Reaction E°(V)
Ag+ + e- Ag (s) +0.80
Cu2+ + 2e- Cu (s) +0.34
Pb2+ + 2e- Pb (s) -0.13
Ni2+ + 2e- Ni (s) -0.28
(A) Calculate E°cell for a voltaic cell made with Ni, Ni2+and Ag, and Ag+.
(B) Which substance is Oxidized? (be sure to include the state of the oxidized substance in your answer)
Zn(s) + CuSO4(aq) --> ZnSO4(aq) + Cu(s)
Explanation / Answer
The cell reaction is Ni(s)Ni2+(aq) || Ag+(aq)Ag(s)
so, anode : Ni ====> Ni2+ + 2e-
cathode ; Ag+ + e- ===> Ag
Eocell = Ecathode - E anode = 0.80 - (-0.28) = 1.08V