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6. The corrosion rate of iron in deaerated HCl of pH = 3 is 3.0 gmd. Calculate the corrosion potential of iron in this acid versus saturated calomel electrode. Assume that the entire iron surface acts as a cathode. Assume that the hydrogen overpotential (volts) for the same steel follows the relation-0.7 -0.1 log i, where i = A/cm² Ans: Ecorr = -0.626 VSCE Hint: First convert gmd to icorr in A/cm² and find hydrogen overpotential and EH+/H2 to find Ecorr

6. The corrosion rate of iron in deaerated HCl of pH = 3 is 3.0 gmd. Calculate the corrosion potential of iron in this acid versus saturated calomel electrode. Assume that the entire iron surface acts as a cathode. Assume that the hydrogen overpotential (volts) for the same steel follows the relation-0.7 -0.1 log i, where i = A/cm² Ans: Ecorr = -0.626 VSCE Hint: First convert gmd to icorr in A/cm² and find hydrogen overpotential and EH+/H2 to find Ecorr

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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6. The corrosion rate of iron in deaerated HCl of pH = 3 is 3.0 gmd. Calculate the corrosion potential of iron in this acid versus saturated calomel electrode. Assume that the entire iron surface acts as a cathode. Assume that the hydrogen overpotential (volts) for the same steel follows the relation -0.7 - 0.1 log i, where i = A/cm? Ans: Ecorr = -0.626 VSCE Hint: First convert gmd to icorr in A/cm² and find hydrogen overpotential and EH-H2 to find Ecorr
Transcribed Image Text:6. The corrosion rate of iron in deaerated HCl of pH = 3 is 3.0 gmd. Calculate the corrosion potential of iron in this acid versus saturated calomel electrode. Assume that the entire iron surface acts as a cathode. Assume that the hydrogen overpotential (volts) for the same steel follows the relation -0.7 - 0.1 log i, where i = A/cm? Ans: Ecorr = -0.626 VSCE Hint: First convert gmd to icorr in A/cm² and find hydrogen overpotential and EH-H2 to find Ecorr
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