AMPP Corrosion Technician Practice Questions - AMPP Corrosion Technician Certification Exam

At the anode of a corroding iron surface, what is the primary half-reaction?

O2 + 2H2O + 4e- → 4OH- Fe → Fe2+ + 2e- 2H+ + 2e- → H2 Fe3+ + e- → Fe2+

Correct Answer:

Fe → Fe2+ + 2e-

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