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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.

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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
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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 e is 10 A/cm. Assume that the corrosion potential is -0.5225 V vs. SHE.
Transcribed Image Text: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 e is 10 A/cm. Assume that the corrosion potential is -0.5225 V vs. SHE.
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