4) The Zn/Cu battery operates using the following redox reactions: + 2e → Cu) E° = 0.34V Cua Zn + 2e → Zn E° = -0.76V a) What is the cell potential E for ion concentrations [Cu²+]=0.02M and [Zn²+]=0.05M? (assume all activity coefficients y = 1)
4) The Zn/Cu battery operates using the following redox reactions: + 2e → Cu) E° = 0.34V Cua Zn + 2e → Zn E° = -0.76V a) What is the cell potential E for ion concentrations [Cu²+]=0.02M and [Zn²+]=0.05M? (assume all activity coefficients y = 1)
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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![4) The Zn/Cu battery operates using the following redox reactions:
Cu + 2e- → Cu(0) E° = 0.34V
Zn + 2e- → Zn E° = -0.76V
a) What is the cell potential E for ion concentrations [Cu?+]=0.02M and [Zn²+]=0.05M?
(assume all activity coefficients y = 1)
b) If an external voltage of Et = -1.0 V, is applied to the cell, what is the equilibrium
concentration of Zn²+ ions if [Cu²*]«q=0.001M? (assume all activity coefficients y = 1)
c) An alkaline battery utilizes the following overall reaction
Zn(s) + 2MnO2(s) → Zn0(s) + Mn2Os(s)
unlike the Zn/Cu battery, the cell potential of the alkaline battery does not change as the
battery discharges. Explain why this is based on the Nernst equation.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9a4dcd82-baf4-45bc-b40b-693a3e683492%2F147da149-4058-491f-b2ac-4adc9b9db43e%2Ffddwshf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:4) The Zn/Cu battery operates using the following redox reactions:
Cu + 2e- → Cu(0) E° = 0.34V
Zn + 2e- → Zn E° = -0.76V
a) What is the cell potential E for ion concentrations [Cu?+]=0.02M and [Zn²+]=0.05M?
(assume all activity coefficients y = 1)
b) If an external voltage of Et = -1.0 V, is applied to the cell, what is the equilibrium
concentration of Zn²+ ions if [Cu²*]«q=0.001M? (assume all activity coefficients y = 1)
c) An alkaline battery utilizes the following overall reaction
Zn(s) + 2MnO2(s) → Zn0(s) + Mn2Os(s)
unlike the Zn/Cu battery, the cell potential of the alkaline battery does not change as the
battery discharges. Explain why this is based on the Nernst equation.
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