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ch the double layer per second per second that a single atom c Esuming that the atom occupi

ch the double layer per second per second that a single atom c Esuming that the atom occupi

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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3. The exchange current density at the electrode Pt| Fe"| Fe is 2.4 x 103 A cm 2. How many electrons are transported through the double layer per second in the cell (area of 1 cm?)? Estimate the number of times per second that a single atom on the surface takes part in an electron transfer event, assuming that the atom occupies 280 pm? of the surface of the electrode. 4. Using the Randles-Sevic equation, calculate the current observed at a gold electrode of diameter 2 mm for the one electron reduction of ferricyanide (ImM) at scan rates of 50, 100 and 200 mVs1. The diffusion coefficient of ferricyanide is 4.5 x 104 cm² s'.
Transcribed Image Text:3. The exchange current density at the electrode Pt| Fe"| Fe is 2.4 x 103 A cm 2. How many electrons are transported through the double layer per second in the cell (area of 1 cm?)? Estimate the number of times per second that a single atom on the surface takes part in an electron transfer event, assuming that the atom occupies 280 pm? of the surface of the electrode. 4. Using the Randles-Sevic equation, calculate the current observed at a gold electrode of diameter 2 mm for the one electron reduction of ferricyanide (ImM) at scan rates of 50, 100 and 200 mVs1. The diffusion coefficient of ferricyanide is 4.5 x 104 cm² s'.
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