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Write equations for the reactions of :
(i) iron with steam
(ii) calcium and potassium with water
Iron with Steam Chemical Equation
3Fe (Iron) + 4H2O (Water) → Fe3O4(Iron(II,III) Oxide) + 4H2 (Hydrogen Gas)
Calcium with Water
Metal + Steam → Metal Hydroxide + Hydrogen Gas Ca + 2H2O → Ca(OH)2 + H2
Potassium with Water
Potassium reacts violently with cold water to form potassium hydroxide. During the process, much heat is released; the hydrogen gas generated caught fire and rapidly burned.
2K + 2H2O → 2KOH + H2 + Heat
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