I have solved this equation and seen solutions to it. However, I keep seeing Pb2+ squared in the Nernst Equation (for Q) for the calcuation of the second part of this question. I do not understand why Pb2+ is squared. Can you explain that to me? Thank you. A galvanic cell is constructed in which the overall reac-tion isPb(s) + 2 H;O* (aq) → Pb²+ (aq) + H2 (g) + 2 H20(e)(a) Calculate AE° for this cell.(b) Chloride ions are added until PbCl, precipitates at theanode and [CI-] reaches 0.15 M. The cell potential isthen measured to be 0.22 V at pH = 0 and PH,1.0 atm. Calculate [Pb2+] under these conditions.(c) Calculate the solubility product constant Kp of PbCl2.

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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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I have solved this equation and seen solutions to it. However, I keep seeing Pb2+ squared in the Nernst Equation (for Q) for the calcuation of the second part of this question. I do not understand why Pb2+ is squared. Can you explain that to me? Thank you.

A galvanic cell is constructed in which the overall reac-
tion is
Pb(s) + 2 H;O* (aq) → Pb²+ (aq) + H2 (g) + 2 H20(e)
(a) Calculate AE° for this cell.
(b) Chloride ions are added until PbCl, precipitates at the
anode and [CI-] reaches 0.15 M. The cell potential is
then measured to be 0.22 V at pH = 0 and PH,
1.0 atm. Calculate [Pb2+] under these conditions.
(c) Calculate the solubility product constant Kp of PbCl2.

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