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Dissolved Oxygen(usually between 20 - 60 ppm) reacts with H2O and the delocalized (conductive) electrons on the surface metal O2 + H2O + 4e- to form 4(OH)- ions that in turn draw the now charged (Fe2+) ions out into solution as 2Fe(OH)2...RUST

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11y ago
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10y ago

catylst for rusting due t high reactive form.

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Q: Explain the role played by dissolved oxygen in the general mechanism proposed to explain the various steps in crevice corrosion?
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