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Write the equations of anodic and cathod...

Write the equations of anodic and cathodic reactions occur during rusting of iron.

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(i) At Anode : `2Fe to 2Fe^(2+) + 4e^(-)`
(ii)At Cathode : `O_2 + 4H^(+) +4e^(-) to 2H_2O`
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