Consider the following standard reduction potentials in acid solution. Which half reaction is the most favored process thermodynamically?
E°(V)
A) Al 3+ + 3e- -> Al(s) -1.66
B) AgBr (s) + e- -> Ag(s) + Br- +0.07
C) Sn 4+ + 2e- -> Sn2+ +0.14
D) Fe 3+ + e- -> Fe2+ +0.77
E) O 2 + 4e- + 4H+ -> H2O +1.23