Use the standard reduction potentials located in the Tables' linked above to calculate the standard free energy change in kJ for the reaction: Fe2+ (aq) + 2Fe2+ (aq) Fe(s) + 2Fe3+ (aq) Answer: kj K for this reaction would be than one.
Use the standard reduction potentials located in the Tables' linked above to calculate the standard free energy change in kJ for the reaction: Fe2+ (aq) + 2Fe2+ (aq) Fe(s) + 2Fe3+ (aq) Answer: kj K for this reaction would be than one.
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 18.96QE
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Transcribed Image Text:Use the standard reduction potentials located in the 'Tables' linked above to calculate the standard free energy change in kJ for the reaction:
Fe2+ (aq) + 2Fe2+ (aq) Fe(s) + 2Fe³+ (aq)
Answer:
kj
K for this reaction would be
than one.
Transcribed Image Text:Standard Reduction (Electrode) Potentials at 25 °C
Half-Cell Reaction
2 F (aq)
F₂(g) + 2 e
Ce¹(aq) + e
MnO₂ (aq) + 8
Cl₂(g) + 2 e
Cr₂0₂² (aq) + 14 H(aq) + 6 e —> 2 Cr³(aq) + 7 H₂0 (1)
O₂(g) + 4 H* (aq) + 4e-2 H₂0 (1)
Br₂(1) +2 e 2 Br (aq)
NO₂ (aq) + 4 H*(aq) + 3 e° ——» NO(g) + 2 H₂0 (1)
2 Hg2+ (aq) + 2 eHg₂² (aq)
Hg2+ (aq) + 2 eHg(1)
Ag (aq) + e
Ag(s)
Hg₂²*(aq) + 2 e
Ce³+ (aq)
H(aq) + 5 e
2 Cl(aq)
→→→>2 Hg(!)
Fe³+ (aq) + e
1₂ (s) + 2 e →21 (aq)
→→→Fe²+ (aq)
Fe(CN),³(aq) + e > Fe(CN),* (aq)
Cu²+ (aq) + 2 e
Cu(s)
Cu²+ (aq) +
Cu(aq)
S(s) + 2 H¹ (aq) + 2 H₂S(aq)
2 H*(aq) + 2e
Pb²+ (aq) + 2 e
Sn²(aq) + 2 e
Ni²+ (aq) + 2 e
Co²+ (aq) + 2 e
Cd²+ (aq) + 2 e
Cr²³(aq) + e
Fe²+ (aq) + 2 e
Cr³+ (aq) + 3 e
Zn²2(aq) + 2 e
2 H₂O(1) + 2 e
H₂(g)
> Pb(s)
Sn(s)
→→Ni(s)
Co(s)
Cd (s)
Cr²2 (aq)
Mn²+ (aq) + 4H₂O(1)
→→Fe(s)
→→Cr(s)
Zn(s)
> H₂(g) + 2 OH(aq)
Mn²+ (aq) + 2e →→→Mn(s)
Al³+ (aq) + 3 e →→→> Al(s)
Mg2+ (aq) + 2 e
Mg(s)
Na (aq) +eNa(s)
K(aq) + e →→→K(s)
Li (aq) +eLi(s)
Eº (volts)
2.87
1.61
1.51
1.36
1.33
1.229
1.08
0.96
0.920
0.855
0.799
0.789
0.771
0.535
0.48
0.337
0.153
0.14
0.0000
-0.126
-0.14
-0.25
-0.28
-0.403
-0.41
-0.44
-0.74
-0.763
-0.83
-1.18
-1.66
-2.37
-2.714
-2.925
-3.045
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