TABLE 20.1 Standard Reduction Potentials in Water at 25°C E°red(V) Reduction Half-Reaction → 2 F (aq) Mno, (aq) + 8 H*(aq) + 5 e- → 2 CI (aq) +2.87 F(g) + 2e +1.51 Mn2"(aq) + 4 H,O(1) +1.36 Cl2(8) + 2 e +1.33 Ct20,7 (ag) + 14 H*(aq) + 6 e 2 Cr"(aq) + 7 H20(I) O2(8) + 4 H*(aq) + 4e → 2 Br (aq) +1.23 2 H20(I) +1.06 Br,(1) + 2 e +0.96 NO3 (ag) + 4 H*(aq) + 3 e NO(g) + 2 H20(1) +0.80 Ag*(aq) + e - Ag(s) +0.77 Fe*(aq) + e Fe2* (aq) O2(8) + 2 H*(ag) + 2e ► H,O2(aq) +0.68 +0.59 MnO, (aq) + 2 H20(I) + 3 e MnO2(s) + 4 OH(aq) +0.54 2(s) + 2e 21 (aq) -4Он (ад) ► Cu(s) +0.40 O2(8) + 2 H20(1) + 4 e +0.34 Cu2+(ag) + 2 e → 0 [defined] 2H*(ag) + 2e H2(8) -0.28 Ni2*(aq) + 2e Ni(s) -0.44 Fe2+ (aq) + 2 e Fe(s) -0.76 Zn2+(aq) + 2 e · Zn(s) -0.83 2 H,0(1) + 2 e H2(8) + 2 OH (aq) -1.66 Al3* (aq) + 3 e Al(s) -2.71 Na* (aq) + e Na(s) -3.05 Li* (aq) + e - Li(s)

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 120AE
icon
Related questions
Question

For the reaction
3 Ni2+(aq) + 2 Cr(OH)3(s) + 10 OH-(aq)---->3 Ni(s) + 2 CrO42-(aq) + 8H2O(l)

ΔG° = +87 kJ/mol. Given the standard reduction potential
of Ni2+(aq)in Table , what value do you calculate for the
standard reduction potential of the half-reaction
CrO42-(aq) + 4 H2O(l) + 3 e----> Cr(OH)3(s) + 5 OH-(aq)?
(a) -0.43 V (b) -0.28 V (c) 0.02 V (d) -0.13 V (e) -0.15 V

TABLE 20.1 Standard Reduction Potentials in Water at 25°C
E°red(V)
Reduction Half-Reaction
→ 2 F (aq)
Mno, (aq) + 8 H*(aq) + 5 e-
→ 2 CI (aq)
+2.87
F(g) + 2e
+1.51
Mn2"(aq) + 4 H,O(1)
+1.36
Cl2(8) + 2 e
+1.33
Ct20,7 (ag) + 14 H*(aq) + 6 e
2 Cr"(aq) + 7 H20(I)
O2(8) + 4 H*(aq) + 4e →
2 Br (aq)
+1.23
2 H20(I)
+1.06
Br,(1) + 2 e
+0.96
NO3 (ag) + 4 H*(aq) + 3 e
NO(g) + 2 H20(1)
+0.80
Ag*(aq) + e
- Ag(s)
+0.77
Fe*(aq) + e
Fe2* (aq)
O2(8) + 2 H*(ag) + 2e
► H,O2(aq)
+0.68
+0.59
MnO, (aq) + 2 H20(I) + 3 e
MnO2(s) + 4 OH(aq)
+0.54
2(s) + 2e
21 (aq)
-4Он (ад)
► Cu(s)
+0.40
O2(8) + 2 H20(1) + 4 e
+0.34
Cu2+(ag) + 2 e →
0 [defined]
2H*(ag) + 2e
H2(8)
-0.28
Ni2*(aq) + 2e
Ni(s)
-0.44
Fe2+ (aq) + 2 e
Fe(s)
-0.76
Zn2+(aq) + 2 e
· Zn(s)
-0.83
2 H,0(1) + 2 e
H2(8) + 2 OH (aq)
-1.66
Al3* (aq) + 3 e
Al(s)
-2.71
Na* (aq) + e
Na(s)
-3.05
Li* (aq) + e
- Li(s)
Transcribed Image Text:TABLE 20.1 Standard Reduction Potentials in Water at 25°C E°red(V) Reduction Half-Reaction → 2 F (aq) Mno, (aq) + 8 H*(aq) + 5 e- → 2 CI (aq) +2.87 F(g) + 2e +1.51 Mn2"(aq) + 4 H,O(1) +1.36 Cl2(8) + 2 e +1.33 Ct20,7 (ag) + 14 H*(aq) + 6 e 2 Cr"(aq) + 7 H20(I) O2(8) + 4 H*(aq) + 4e → 2 Br (aq) +1.23 2 H20(I) +1.06 Br,(1) + 2 e +0.96 NO3 (ag) + 4 H*(aq) + 3 e NO(g) + 2 H20(1) +0.80 Ag*(aq) + e - Ag(s) +0.77 Fe*(aq) + e Fe2* (aq) O2(8) + 2 H*(ag) + 2e ► H,O2(aq) +0.68 +0.59 MnO, (aq) + 2 H20(I) + 3 e MnO2(s) + 4 OH(aq) +0.54 2(s) + 2e 21 (aq) -4Он (ад) ► Cu(s) +0.40 O2(8) + 2 H20(1) + 4 e +0.34 Cu2+(ag) + 2 e → 0 [defined] 2H*(ag) + 2e H2(8) -0.28 Ni2*(aq) + 2e Ni(s) -0.44 Fe2+ (aq) + 2 e Fe(s) -0.76 Zn2+(aq) + 2 e · Zn(s) -0.83 2 H,0(1) + 2 e H2(8) + 2 OH (aq) -1.66 Al3* (aq) + 3 e Al(s) -2.71 Na* (aq) + e Na(s) -3.05 Li* (aq) + e - Li(s)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 6 images

Blurred answer
Knowledge Booster
Electrochemical Cells
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Principles of Modern Chemistry
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning