7. What current density is necessary to get a Cu plating rate of 0.005 mm perminute?8. What is the material removal rate for Fe if the corrosion current density is 15HA/cm2?9. Assuming the anodic Tafel constant is 0.1 V, how much will the corrosion rateincrease if the electrode is polarized 0.2 V in the positive direction?10. Assuming the Tafel constant is 0.1 V, how much must we cathodically polarize acorroding sample to reduce the corrosion rate by a factor of 50?

The aim of this question is to explain the Cathodic polarization is used to reduce the corrosion…

increase if the electrode is polarized 0.2 V in the positive direction? 0. Assuming the Tafel constant is 0.1 V, how much must we cathodically polarize a corroding sample to reduce the corrosion rate by a factor of 50?

increase if the electrode is polarized 0.2 V in the positive direction? 0. Assuming the Tafel constant is 0.1 V, how much must we cathodically polarize a corroding sample to reduce the corrosion rate by a factor of 50?

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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Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

7. What current density is necessary to get a Cu plating rate of 0.005 mm per
minute?
8. What is the material removal rate for Fe if the corrosion current density is 15
HA/cm2?
9. Assuming the anodic Tafel constant is 0.1 V, how much will the corrosion rate
increase if the electrode is polarized 0.2 V in the positive direction?
10. Assuming the Tafel constant is 0.1 V, how much must we cathodically polarize a
corroding sample to reduce the corrosion rate by a factor of 50?

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