SOLVING PROBLEMS:
A CHEMISTRY HANDBOOK
Appendix A
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
318 Chemistry: Matter and Change
Solving Problems: A Chemistry Handbook
Standard Reduction Potentials at 25°C, 1 atm,
and 1M Ion Concentration, continued
Table A-11, continued
Half-reaction
E 0 (V)
Sn 4ϩ ϩ 2e Ϫ 0 Sn 2ϩ
0.151
Cu 2ϩ ϩ e Ϫ 0 Cu ϩ
0.153
SO 4
2Ϫ ϩ 4H ϩ ϩ 2e Ϫ 0 H 2 SO 3 ϩ H 2 O
0.172
Bi 3ϩ ϩ 3e Ϫ 0 Bi
0.308
Cu 2ϩ ϩ 2e Ϫ 0 Cu
0.3419
O 2 ϩ 2H 2 O ϩ 4e Ϫ 0 4OH Ϫ
0.401
Cu ϩ ϩ e Ϫ 0 Cu
0.521
I 2 ϩ 2e Ϫ 0 2I Ϫ
0.5355
O 2 ϩ 2H ϩ ϩ 2e Ϫ 0 H 2 O 2
0.695
Fe 3ϩ ϩ e Ϫ 0 Fe 2ϩ
0.771
NO 3
Ϫ ϩ 2H ϩ ϩ e Ϫ 0 NO 2 ϩ H 2 O
0.775
Hg 2
2ϩ ϩ 2e Ϫ 0 2Hg
0.7973
Ag ϩ ϩ e Ϫ 0 Ag
0.7996
Hg 2ϩ ϩ 2e Ϫ 0 Hg
0.851
2Hg 2ϩ ϩ 2e Ϫ 0 Hg 2
2ϩ
0.920
Pd 2ϩ ϩ 2e Ϫ 0 Pd
0.951
NO 3
Ϫ ϩ 4H ϩ ϩ 3e Ϫ 0 NO ϩ 2H 2 O
0.957
Br 2 (l) ϩ 2e Ϫ 0 2Br Ϫ
1.066
Ir 3ϩ ϩ 3e Ϫ 0 Ir
1.156
Pt 2ϩ ϩ 2e Ϫ 0 Pt
1.18
O 2 ϩ 4H ϩ ϩ 4e Ϫ 0 2H 2 O
1.229
Cl 2 ϩ 2e Ϫ 0 2Cl Ϫ
1.35827
Au 3ϩ ϩ 2e Ϫ 0 Au ϩ
1.401
Au 3ϩ ϩ 3e Ϫ 0 Au
1.498
MnO 4
Ϫ ϩ 8H ϩ ϩ 5e Ϫ 0 Mn 2ϩ ϩ 4H 2 O
1.507
Au ϩ ϩ e Ϫ 0 Au
1.692
H 2 O 2 ϩ 2H ϩ ϩ 2e Ϫ 0 2H 2 O
1.776
Co 3ϩ ϩ e Ϫ 0 Co 2ϩ
1.92
S 2 O 8
2Ϫ ϩ 2e Ϫ 0 2SO 4
2Ϫ
2.010
O 3 ϩ 2H ϩ ϩ 2e Ϫ 0 O 2 ϩ H 2 O
2.076
F 2 ϩ 2e Ϫ 0 2F Ϫ
2.866