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A student writes the reaction of steam with red-hot iron as \(Fe + H_2O \to FeO + H_2\). Which option correctly corrects the error?

Answer and explanation

Correct answer: The product is \(Fe_3O_4\), not \(FeO\); the correct equation is \(3Fe + 4H_2O \to Fe_3O_4 + 4H_2\).

Red-hot iron reacts with steam to form magnetite, \(Fe_3O_4\), and hydrogen. The balanced equation is \(3Fe + 4H_2O \to Fe_3O_4 + 4H_2\); each side contains 3 Fe, 4 O, and 8 H atoms. Option D balances the atom count but still incorrectly identifies the iron oxide as \(FeO\).

Related tags

Chemical ReactionsChemical EquationsBalancing EquationsIron Steam ReactionMagnetiteRedox Reaction

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