4) The Zn/Cu battery operates using the following redox reactions:Cu + 2e- → Cu(0) E° = 0.34VZn + 2e- → Zn E° = -0.76Va) 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 equilibriumconcentration of Zn²+ ions if [Cu²*]«q=0.001M? (assume all activity coefficients y = 1)c) An alkaline battery utilizes the following overall reactionZn(s) + 2MnO2(s) → Zn0(s) + Mn2Os(s)unlike the Zn/Cu battery, the cell potential of the alkaline battery does not change as thebattery discharges. Explain why this is based on the Nernst equation.

Zn2+(aq) + 2e- -> Zn(s) Eo = -0.76 Cu2+(aq) + 2e- -> Cu(s) Eo = 0.34…

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: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 105QAP: Consider a voltaic cell in which the following reaction occurs. Zn(s)+Sn2+(aq)Zn2+(aq)+Sn(s) (a)...

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Question

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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