Half-reactionE° (V)Cr3+ (aq) + 3e- → Cr (s)-0.74Fe2+ (aq) + 2e- → Fe (s)-0.440Fe3+ (aq) + e- → Fe2+ (s)+0.771Sn4+ (aq) + 2e- → Sn2+ (aq)+0.154 Which of the following reactions will occur spontaneously as written?Sn2+ (aq) + Fe2+ (s) →→ Sn4+ (aq) + Fe3+ (aq)2Cr (s) + 3Fe2+ (s) →→ 3Fe (s) + 2Cr3+ (aq)2Cr3+ (aq) + 3Sn2+ (aq) →→ 3Sn4+ (aq) + 2Cr (s)3Fe2+ (aq) + Cr3+ (aq) →→ Cr (s) + 3Fe3+ (aq)Sn4+ (aq) + Fe2+ (s) →→ Sn2+ (aq) + Fe (s)

For a reaction to be spontaneous E° cell should be positive Sn2++Fe2+ → Sn4+ +Fe3+ (not a redox…

Answered: Sn2+ (aq) + Fe2+ (s) →→ Sn4+ (aq) +…

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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Half-reaction	E° (V)
Cr³⁺ (aq) + 3e^- → Cr (s)	-0.74
Fe²⁺ (aq) + 2e^- → Fe (s)	-0.440
Fe³⁺ (aq) + e^- → Fe²⁺ (s)	+0.771
Sn⁴⁺ (aq) + 2e^- → Sn²⁺ (aq)	+0.154

Which of the following reactions will occur spontaneously as written?

Sn²⁺ (aq) + Fe²⁺ (s) →→ Sn⁴⁺ (aq) + Fe³⁺ (aq)

2Cr (s) + 3Fe²⁺ (s) →→ 3Fe (s) + 2Cr³⁺ (aq)

2Cr³⁺ (aq) + 3Sn²⁺ (aq) →→ 3Sn⁴⁺ (aq) + 2Cr (s)

3Fe²⁺ (aq) + Cr³⁺ (aq) →→ Cr (s) + 3Fe³⁺ (aq)

Sn⁴⁺ (aq) + Fe²⁺ (s) →→ Sn²⁺ (aq) + Fe (s)

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