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Iron reacts with oxygen to produce iron oxide (rust). This reaction is represented in an equation as 4Fe + xO2 → 2Fe2O3. Identify the value of x that will balance the equation.
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Respuesta :

Dejanras

Answer is:  the value of x is 3.

Chemical reaction: Fe + O₂ → Fe₂O₃.

Oxidation half reaction: Fe⁰ → Fe⁺³ + 3e⁻ /×4; 4Fe⁰ → 4Fe⁺³ + 12e⁻.

Reduction half reaction: O₂⁰+ 4e⁻ → 2O⁻²/×3; 3O₂⁰+ 12e⁻ → 6O⁻².

Balanced chemical reaction: 4Fe + 3O₂ → 2Fe₂O₃.

Oxidation is increase of oxidation number, iron is oxidized from oxidation number 0 (Fe) to oxidation number +3 (in rust Fe₂O₃).