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Preparation of Hydrogen

When steam in...

Question

When steam in passed over red hot iron, water gas is formed.
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Solution

When steam in passed over red hot iron, hydrogen gas is formed along with ferroso ferric oxide. This reaction is reversible when it takes place in a closed container.
$3 F e + 4 H_{2} O ⟶ F e_{3} O_{4} + 4 H_{2} ↑$

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