When the Pb2+ concentration is 1.43 M, the observed cell potential at 298 K for an electrochemical cell with the following reaction is 0.688 V. What is the Cr³+ concentration? 3Pb²+ (aq) + 2Cr(s) → 3Pb(s) + 2Cr³+ (aq) Pb²+ (aq) + 2e → Pb(s) E red Cr³+ (aq) + 3e¯ → Cr(s) Ee red [Cr³+] = M -0.126 V -0.740 V

When the Pb2+ concentration is 1.43 M, the observed cell potential at 298 K for an electrochemical cell with the following reaction is 0.688 V. What is the Cr³+ concentration? 3Pb²+ (aq) + 2Cr(s) → 3Pb(s) + 2Cr³+ (aq) Pb²+ (aq) + 2e → Pb(s) E red Cr³+ (aq) + 3e¯ → Cr(s) Ee red [Cr³+] = M -0.126 V -0.740 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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