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Table 19D.1 Exchange-current densities and transfer coefficients at 298K* Reaction Electrode j/(Acm) 7.9 x 10 6.3 x 10 2H* +2e → H, Pt Ni 0.58 Pb 5.0 x 10-12 Fe* + e → Fe* Pt 2.5 x 103 0.58 * More values are given in the Resource section.

Table 19D.1 Exchange-current densities and transfer coefficients at 298K* Reaction Electrode j/(Acm) 7.9 x 10 6.3 x 10 2H* +2e → H, Pt Ni 0.58 Pb 5.0 x 10-12 Fe* + e → Fe* Pt 2.5 x 103 0.58 * More values are given in the Resource section.

Chemistry
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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Use the data in Table 19D.1 for the exchange-current density and transfer coefficient for the reaction Fe3+ + e− → Fe2+ on platinum at 25 °C to identify the current density needed to obtain an overpotential of 0.30 V as calculated (i) by using the Butler–Volmer equation, and (ii) by assuming that the current is entirely anodic. Comment on the validity of the latter assumption.

Table 19D.1 Exchange-current densities and transfer coefficients at 298K* Reaction Electrode j/(Acm) 7.9 x 10 6.3 x 10 2H* +2e → H, Pt Ni 0.58 Pb 5.0 x 10-12 Fe* + e → Fe* Pt 2.5 x 103 0.58 * More values are given in the Resource section.
Transcribed Image Text:Table 19D.1 Exchange-current densities and transfer coefficients at 298K* Reaction Electrode j/(Acm) 7.9 x 10 6.3 x 10 2H* +2e → H, Pt Ni 0.58 Pb 5.0 x 10-12 Fe* + e → Fe* Pt 2.5 x 103 0.58 * More values are given in the Resource section.
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