9. What is the standard free-energy change for the following reaction at 25°C? (F= 96,500 C mol-¹) (Show your work) 2Al(s) + 3Sn¹ (aq,1 M)-2A1³3 (aq,1 M) + 3Sn² (aq,1 M) Half-Reaction E° (V) Al³+ (aq) + 3e Al(s) Sn¹ (aq) + 2e →→Sn²+ (aq) - -1.66 +0.13

9. What is the standard free-energy change for the following reaction at 25°C? (F= 96,500 C mol-¹) (Show your work) 2Al(s) + 3Sn¹ (aq,1 M)-2A1³3 (aq,1 M) + 3Sn² (aq,1 M) Half-Reaction E° (V) Al³+ (aq) + 3e Al(s) Sn¹ (aq) + 2e →→Sn²+ (aq) - -1.66 +0.13

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

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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Question

9. What is the standard free-energy change for the following reaction at 25°C? (F=
96,500 C mol-¹) (Show your work)
•
2Al(s) + 3Sn¹(aq,1 M)-2AP (aq,1 M) + 3Sn²+ (aq,1 M)
Half-Reaction
E° (V)
Al³+ (aq) + 3e-
Al(s)
Sn¹¹(aq) + 2e →Sn²+ (aq)
-1.66
+0.13.

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Step 1: Given data

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The free energy change for the following reaction at 25 °C, when [Ag+] = 1.12 M and [Co²+] M, is -221 kJ: 2Ag+ (1.12 M) + Co(s)—2Ag(s) + Co2+ (7.66x10-3 M) AG = -221 kJ What is the cell potential for the reaction as written under these conditions? Answer: V Would this reaction be spontaneous in the forward or the reverse direction? reverse = 7.66x10-3
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Half-Reaction E° (V) 2H* (aq) + 2e¯ - H2 (9) 0.000 Ag* (aq) + e¯ → Ag (s) 0.7996 2H20 (I) + 2e¯ - H2 (g) + 20OH" (aq) -0.8277 AI3+ (aq) + 3e¯ → Al (s) -1.676 H2O2 (aq) + 2H* (aq) + 2e¯ → 2H20 (1I) 1.776 Au+ (aq) + e¯→ Au (s) 1.692 I2 (s) + 2e¯ → 21¯ (aq) 0.5355 Au3+ (aq) + 3e¯ → Au (s) 1.498 2103- (aq) + 12H* (aq) + 10e¯ → I2 (s) + 6H2O (1) Mg2+ (aq) + 2e - Mg (s) 1.195 Ba2+ (aq) + 2e¯ → Ba (s) -2.912 -2.372 Br2 (1) + 2e¯ → 2B1¯ (aq) 1.066 Mn2+ (aq) + 2e" → Mn (s) -1.185 Ca2+ (aq) + 2e¯ → Ca (s) -2.868 Mno2 (s) + 4H+ (aq) + 2e¯ → Mn2+ (aq) + 2H20 (1) 1.224 Cl2 (g) + 2e¯ → 2C1- (aq) 1.35827 Mno4- (aq) + 8H* (aq) + 5e¯ → Mn2+ (aq) + 4H2O (1) 1.507 Co2+ (aq) + 2e¯ → Co (s) -0.28 Mnog- (aq) + 2H20 (I) + 3e¯ → MnO2 (s) + 40H¯ (aq) 0.595 Co3+ (aq) + e¯ → Co2+ (aq) 1.92 HNO2 (aq) + H+ (aq) + e¯ → NO (g) + H2O (I) 0.983 Cr2+ (aq) + 2e¯ → Cr (s) -0.913 N2 (g) + 4H2O (1) + 4e¯ → 40H" (aq) + N2H4 (aq) -1.16 Cr3+ (aq) + 3e¯ → Cr (s) -0.744 NO3- (aq) + 4H* (aq) + 3e¯ → NO (g) + 2H2O (1) 0.957 Cr3+…
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