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| The
most common corrosion reaction is the |
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| rusting of
iron in water |
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| 4
Fe + 6 H2O + 3 O2
<--> 4 Fe(OH)3 |
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| The oxidation portion of the reaction results |
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| in the actual loss of metal |
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| Fe
<--> Fe+2 + 2 e- Step one (OX) |
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| Fe+2
<--> Fe+3 + e-
Step two (OX) |
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| Fe <--> Fe+3 + 3 e-
Overall Oxidation half-reaction |
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| The reduction portion of the reaction |
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| drives the process of corrosion |
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| O2 + 2 H20 + 4
e- <--> 4 OH- Reduction half-reaction |
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