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categoryهندسة مواد schoolبكالوريوس event_available2026-07-14

السؤال

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7. For a metal M corroding in a deaerated acid solution under activation control, determine how the following changes will affect the corrosion rate (i.e. i corr) and the corrosion potential (Ecorr) assuming all other factors remain constant. i.e Increased or decreased or unchanged. (a) Increasing io for the anodic reaction. (b) Increasing io for the cathodic reaction. (c) Increasing the concentration of dissolved H+ ions. (d) Increasing the Tafel constant for the anodic reaction. (e) Increasing solution agitation (stirring). Hint: see the attached diagram, use similar ones as basis, and draw schematics to justify your answer Hydrogen Evolution under activation control Exchange current densities Metal dissolution under activation control Exchange current densities

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