Calculate the hydrogen overpotential of an iron electrode and the corrosion current of iron for pH between 2 and 8. The potential of the iron electrode at unit hydrogen concentration (pH=0), V=-0.75 V vs. SCE. The Tafel slope for the hydrogen evolution reaction is b=-0.12 V/decade. The exchange current density of hydrogen on iron is 10- A/cm. Assume that the corrosion potential is -0.5225 V vs. SHE.

Calculate the hydrogen overpotential of an iron electrode and the corrosion current of iron for pH between 2 and 8. The potential of the iron electrode at unit hydrogen concentration (pH=0), V=-0.75 V vs. SCE. The Tafel slope for the hydrogen evolution reaction is b=-0.12 V/decade. The exchange current density of hydrogen on iron is 10- A/cm. Assume that the corrosion potential is -0.5225 V vs. SHE.

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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