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Sagot :
Answer:
Explanation:
Yes , it is a redox reaction .
3O₂ + 4Fe → 2Fe₂O₃.
Increase of oxidation number shows oxidation and decrease of oxidation number shows reduction .
Neutral atoms have zero oxidation number .
O₂ and Fe are neutral atoms so their oxidation number is zero.
In Fe₂O₃ , charge on each Fe atom is + 3 . So its oxidation number is + 3 . Similarly charge on each of O in this compound is - 2 . So its oxidation number is -2 .
Oxidation number of Fe increases from 0 to + 3 . Hence it is oxidized .
Oxidation number of O decreases from 0 to -2 . Hence it is reduced .
Fe is oxidized by O ( oxygen ) so oxygen is the oxidizing agent .
O is reduced by Fe ( iron ) so iron is the reducing agent .
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