Standard Reduction Potentials



Reduction Half-ReactionE° (V)
F2(g) + 2e- → 2 F-(aq) +2.87
H2O2(aq) + 2H3O+(aq) + 2e- → 4H2O(l)+1.77
PbO2(s) + SO42-(aq) + 4H3O+(aq) + 2e- → PbSO4(s) + 6H2O(l)+1.685
Au3+(aq) + 3e- → Au(s)+1.50
Cl2(g) + 2e- → 2Cl-(aq)+1.360
O2(g) + 4H3O+(aq) + 4e- → 6H2O(l) +1.229
Br2(l) + 2e- → 2Br-(aq)+1.08
Hg2+(aq) + 2e- → Hg(l)+0.855
Ag+(aq) + e- → Ag(s)+.80
Hg22+(aq) + 2e- → 2Hg(l)+0.789
Fe3+(aq) + e- → Fe2+(aq)+0.771
I2(s) + 2e- → 2I-(aq)+0.535
O2(g) + 2H2O(l) + 4e- → 4OH-(aq)+0.40
Cu2+(aq) + 2e- → Cu(s)+0.337
Sn4+(aq) + 2e- → Sn2+(aq)+0.15
2H3O+(aq) + 2e-H2(g) + 2H2O(l)0.00
Sn2+(aq) + 2e- → Sn(s)-.14
Ni2+(aq) + 2e- → Ni(s)-.25
PbSO4(s) + 2e- → Pb(s) + SO42-(aq)-0.356
Cd2+(aq) + 2e- → Cd(s)-0.40
Fe2+(aq) + 2e- → Fe(s)-0.44
Zn2+(aq) + 2e- → >Zn(s)-0.763
2H2O(l) + 2e- → H2(g) + 2OH-(aq)-0.8277
Al3+(aq) + 3e- → Al(s)-1.66
Mg2+(aq) + 2e- → Mg(s)-2.37
Na+(aq) + e- → Na(s)-2.714
K+(aq) + e- → K(s)-2.925
Li+(aq) + e- → Li(s)-3.045