Question

Identify oxidation-reduction in the following reaction:
(i) C + O2→ CO2
(ii) Mg + CI2→ MgCI2
(iii) ZnO + C → Zn + CO
(iv) Fe2O3 + 3CO → 2Fe + 3CO2

Answer 1

(i) and (ii) are oxidation reaction as the oxidation number is increasing whereas (iii) and (iv) are Reduction reaction as the oxidation number is decreasing.

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