Iron + steam gives
Airon(II) oxide + H₂
Biron(II,III) oxide + H₂CORRECT
Ciron(III) oxide + H₂
Dno reaction
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Why the answer is B, and why the others tempt you.
3Fe + 4H₂O(steam) → Fe₃O₄ + 4H₂. Fe₃O₄ = iron(II,III) oxide (magnetite).
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