Calculate e∘cell for each of the following balanced redox reactions.
part a: o2(g)+2h2o(l)+4ag(s) → 4oh−(aq)+4ag+(aq)
part b: br2(l) + 2i−(aq) → 2br−(aq) + i2(s)
part c: pbo2(s)+4h+(aq)+sn(s)→pb2+(aq)+2h2o (l)+sn2+(aq)
part d: which of the reactions are spontaneous as written. check all that apply
a. pbo2(s)+4h+(aq)+sn(s)→pb2+(aq)+h2o( l)+sn2+(aq)
b. br2(l)+2i−(aq)→2br−(aq)+i2(s)
c. o2(g)+2h2o(l)+ag(s)→4oh−(aq)+4ag+(a q)