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The possible galvanic corrosion between zinc and chromium is Cr(s) │ Cr2+ (aq) ║ Zn2+ (aq) │ Zn(s) Note: Cr2+ (aq) + 2e- → Cr(S) E^o = - 0.910 V Oxidation Zn2+ (aq) + 2e- → Zn(S) Eo = - 0.763 V Reduction a) What is the chemical reaction that takes place? Spontaneous or non- spontaneous. b) What is the standard free energy change for that reaction

The possible galvanic corrosion between zinc and chromium is Cr(s) │ Cr2+ (aq) ║ Zn2+ (aq) │ Zn(s) Note: Cr2+ (aq) + 2e- → Cr(S) E^o = - 0.910 V Oxidation Zn2+ (aq) + 2e- → Zn(S) Eo = - 0.763 V Reduction a) What is the chemical reaction that takes place? Spontaneous or non- spontaneous. b) What is the standard free energy change for that reaction

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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The possible galvanic corrosion between zinc and chromium is

Cr(s) │ Cr2+ (aq) ║ Zn2+ (aq) │ Zn(s)
Note: Cr2+ (aq) + 2e- → Cr(S)

E^o = - 0.910 V Oxidation
Zn2+ (aq) + 2e- → Zn(S) Eo = - 0.763 V Reduction

a) What is the chemical reaction that takes place? Spontaneous or non-
spontaneous.

b) What is the standard free energy change for that reaction?

4. The possible galvanic corrosion between zinc and chromium is Cr(s)| Cr2* (aq) || Zn2* (aq) | Zn(s) Note: Cr2* (aq) + 2e Cr(s) E° = - 0.910 V Oxidation Zn2" (aq) + 2e → Zn(s) E° = - 0.763 V Reduction a) What is the chemical reaction that takes place? Spontaneous or non- spontaneous. b) What is the standard free energy change for that reaction?
Transcribed Image Text:4. The possible galvanic corrosion between zinc and chromium is Cr(s)| Cr2* (aq) || Zn2* (aq) | Zn(s) Note: Cr2* (aq) + 2e Cr(s) E° = - 0.910 V Oxidation Zn2" (aq) + 2e → Zn(s) E° = - 0.763 V Reduction a) What is the chemical reaction that takes place? Spontaneous or non- spontaneous. b) What is the standard free energy change for that reaction?
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