78. A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu²* half- cell at 25 °C. The initial concentrations of Pb2 and Cu²* are 0.0500 M and 1.50 M, respectively. a. What is the initial cell potential? b. What is the cell potential when the concentration of Cu2 has fallen to 0.200 M? c. What are the concentrations of Pb2 and Cu2" when the cell potential falls to 0.35 V?

78. A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu²* half- cell at 25 °C. The initial concentrations of Pb2 and Cu²* are 0.0500 M and 1.50 M, respectively. a. What is the initial cell potential? b. What is the cell potential when the concentration of Cu2 has fallen to 0.200 M? c. What are the concentrations of Pb2 and Cu2" when the cell potential falls to 0.35 V?

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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Question

78. A voltaic cell consists of a Pb/Pb2 half-cell and a Cu/Cu2" half-
cell at 25 C. The initial concentrations of Pb and Cu are
0.0500 M and 1.50 M, respectively.
a. What is the initial cell potential?
b. What is the cell potential when the concentration of Cu2"
has fallen to 0.200 M?
c. What are the concentrations of Pb- and Cu" when the cell
potential falls to 0.35 V?

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