Write the chemical equation for the following reactions :
(a) Iron with steam
(b)
Calcium with water
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Write the chemical equation for the following reactions :
(a) Iron with steam
(b)
Calcium with water
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a)When a metal reacts with steam then the products formed are metal oxide and hydrogen gas.
Metal + steam --------> Metal oxide + Hydrogen
When red hot iron reacts with steam to form iron(II,III) oxide and hydrogen.
3Fe(s) + 4H2O(g) steam -------> Fe3O4 (s) + 4H2(g)
b) calcium with water:
When a metal reacts with water( cold water or hot water) then the products formed are metal hydroxide and hydrogen gas.
Metal + steam --------> Metal hydroxide + Hydrogen
Calcium reacts with cold water to form calcium hydroxide and hydrogen gas:
Ca(s)+ 2H2O(l) --------> Ca(OH)2(aq) + H2(g)