For oxidation of iron, 4Fe(s) + 3O2 (g) → 2Fe2O3 (s) entropy change is – 549.4 JK–1 mol–1 at 298 K. Inspite of negative entropy change of this reaction, why is the reaction spontaneous? (∆rH for this reaction is –1648 × 103 J mol–1)

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TextSpontaneity of a Chemical Process

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