How is Hydrogen prepared by the action of water on steam .Give 3
Chemical equations for each.
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To obtain H
2
using boiling water and
(a) A divalent metal Mg
Mg+H 2 O⟶MgO+H 2
(b) Steam and trivalent metal Al
2Al+3H 2 O⟶Al2O 3 +3H 2
(c) Steam and a metal- a reaction is reversible
3Fe+4H
2 O⇌Fe 3 O 4 +4H 2
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