1. Use the table of standard reduction potentials on page A24 of your textbook to pick a reagent that is capable of each of the following reductions (under standard conditions in acidic solution). a) Reduces Cu²+ to Cu but does not reduce Cu2+ to Cu* b) Reduces Br2 to Br- but does not reduce I2 to I-
1. Use the table of standard reduction potentials on page A24 of your textbook to pick a reagent that is capable of each of the following reductions (under standard conditions in acidic solution). a) Reduces Cu²+ to Cu but does not reduce Cu2+ to Cu* b) Reduces Br2 to Br- but does not reduce I2 to I-
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:A24
Appendix 5
Equilibrium Constants and Reduction Potentials
Table A5.5
Standard Reduction Potentials at 25°C (298 K) for Many Common Half-Reactions
Half-Reaction
E° (V)
Half-Reaction
E° (V)
F2 + 2e-
Ag2+ + e → Ag*
Соз+ + е —— Со2+
О2 + 2H,0 + 4e
Cu2+ + 2e¯ → Cu
→ 2F-
2.87
> 40H-
0.40
1.99
0.34
Hg2 Cl2 + 2e-
AgCl + e- –→ Ag + Cl-
SO,2- + 4H+ + 2e- → H,SO3 + H2O
Cu2+ + e- – → Cu+
2H+ + 2e
Fe3+ + 3e
1.82
2Hg + 2Cl-
0.27
>
Н,О, + 2H+ + 2е —> 2H,0
Се4+ + e — > Сез+
PbO2 + 4H+ + SO,2- + 2e
MnO4+ + 4H+ + 3e¯ → MnO2 + 2H2O
I04- + 2H+ + 2e
MnO4+ + 8H+ + 5e¯
Au3+ + 3e- → Au
1.78
0.22
1.70
0.20
» PbSO4 + 2H2O
1.69
0.16
1.68
H2
0.00
→ I03¯ + H2O
→ Mn2+ + 4H2O
1.60
Fe
-0.036
1.51
Pb2+ + 2e-
Pb
-0.13
1.50
Sn2+ + 2e-
Sn
-0.14
Ni2+ + 2e
PbO2 + 4H+ + 2e- → Pb²+ + 2H2O
Cl2 + 2e- – → 2Cl-
Cr202- + 14H+ + 6e¯ –→ 2Cr³+ + 7H2O
O2 + 4H+ + 4e-
MnO2 + 4H+ + 2e-
IO3- + 6H+ + 5e-
Br2 + 2e- – → 2B1¯
VO2+ + 2H+ + e¯
AuCl,- + 3e-
NO3- + 4H+ + 3e¯ → NO + 2H2O
CIO, + e- →
2Hg²+ + 2e
Ag+ + e-
Hg22+ + 2e- → 2Hg
Fe3+ + e- –→ Fe2+
1.46
→ Ni
-0.23
PBSO4 + 2e-
Cd2+ + 2e-
→ Pb + SO,²-
→ Cd
→ Fe
1.36
-0.35
1.33
-0.40
Fe2+ + 2e-
2H2O
→ Mn2+
I2 + 3H2O
1.23
-0.44
2H2O
1.21
Cr3+ + e-
Cr2+
-0.50
1.20
Cr3+ + 3e-
→ Cr
-0.73
Zn2+ + 2e
2H2O + 2e
Mn2+ + 2e-
1.09
Zn
-0.76
» VO2+ + H2O
→ Au + 4Cl-
→ H2 + 20H-
Mn
1.00
-0.83
0.99
-1.18
0.96
Al3+ + 3e-
→ Al
-1.66
ClO,-
» Hg,2+
Н, + 2е-
Mg2+ + 2e-
La3+ + 3e-
Na+ + e-
0.954
2H-
-2.23
→ Mg
→ La
0.91
-2.37
→ Ag
0.80
-2.37
0.80
→ Na
-2.71
0.77
Ca2+ + 2e-
> Ca
-2.76
O2 + 2H+ + 2e- → H2O2
MnO4- + e¯ → MnO,2-
I2 + 2e- –
Cut + e - → Cu
0.68
Вa2+ + 2e- — Ва
-2.90
0.56
K+ + e¯ –
→ K
-2.92
→ 21-
0.54
Li+ + e¯ –→ Li
- 3.05
0.52

Transcribed Image Text:1. Use the table of standard reduction potentials on page A24 of your textbook to pick
a reagent that is capable of each of the following reductions (under standard
conditions in acidic solution).
a) Reduces Cu²+ to Cu but does not reduce Cu2+ to Cu+
b) Reduces Br2 to Br- but does not reduce I2 to I-
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