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Redox Reactions and Couple

What is the d...

Question

What is the difference between FeO + O2 → Fe2O3 and Fe + O2 → Fe2O3?

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Solution

Dear student.
There is not much difference between the two reactions .
Both are oxidation reactions .In first Fe changes from +2 to +3 , in second Fe change from 0 to +3
The difference is of the amount of oxygen used up.

$4 F e O + O_{2} \to 2 F e_{2} O_{3}$

$4 F e + 3 O_{2} \to 2 F e_{2} O_{3}$

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