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Fe3+ + 1e- → Fe2+         Eo = 0.77 V Sn4+ + 2e- → Sn2+        Eo = 0.15 V Fe2+ + 2e- → Fe           Eo = -0.44 V Cr3+ + 3e- → Cr           Eo = -0.74 V   According to the above half reactions, which of the following redox reactions happens spontaneously? A)Sn4+ + Fe3+ → Sn2+ + Fe2+ B)3 Fe + 2 Cr3+ → 2 Cr + 3 Fe2+ C)Sn4+ + Fe2+ → Sn2+ + Fe D)3 Sn4+ + 2 Cr → 2 Cr3+ + 3 Sn2+ E)3 Fe2+ → Fe + 2 Fe3

Fe3+ + 1e- → Fe2+         Eo = 0.77 V Sn4+ + 2e- → Sn2+        Eo = 0.15 V Fe2+ + 2e- → Fe           Eo = -0.44 V Cr3+ + 3e- → Cr           Eo = -0.74 V   According to the above half reactions, which of the following redox reactions happens spontaneously? A)Sn4+ + Fe3+ → Sn2+ + Fe2+ B)3 Fe + 2 Cr3+ → 2 Cr + 3 Fe2+ C)Sn4+ + Fe2+ → Sn2+ + Fe D)3 Sn4+ + 2 Cr → 2 Cr3+ + 3 Sn2+ E)3 Fe2+ → Fe + 2 Fe3

Chemistry
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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Fe3+ + 1e- → Fe2+         Eo = 0.77 V

Sn4+ + 2e- → Sn2+        Eo = 0.15 V

Fe2+ + 2e- → Fe           Eo = -0.44 V

Cr3+ + 3e- → Cr           Eo = -0.74 V

 

According to the above half reactions, which of the following redox reactions happens spontaneously?

A)Sn4+ + Fe3+ → Sn2+ + Fe2+

B)3 Fe + 2 Cr3+ → 2 Cr + 3 Fe2+

C)Sn4+ + Fe2+ → Sn2+ + Fe

D)3 Sn4+ + 2 Cr → 2 Cr3+ + 3 Sn2+

E)3 Fe2+ → Fe + 2 Fe3

 

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