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
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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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5459d827-89ce-42eb-91b9-9a841cd7b37e%2F4126e765-53fe-4474-b4ee-b558b0ac4d65%2F2rpkj28_processed.jpeg&w=3840&q=75)
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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