Question- Calculate E°cell for each balanced redox reaction and determine whether the reaction is spontaneous as written.
1. O2(g) + 2 H2O(l) + 4 Ag(s) ? 4 OH?(aq) + 4 Ag+(aq)
2. Br2(l) + 2 I? (aq) ? 2 Br? (aq) + I2(s)
3. PbO2(s) + 4 H+(aq) + Sn(s) ? Pb2+(aq) + 2 H2O(l) + Sn2+(aq)
Answer showing how to make each solution will get rated