Write the balanced equation for the following chemical reactions.
(i) Hydrogen + Chlorine `rarr` Hydrogen chloride
(ii) Barium chloride + Aluminium sulphate `rarr` Barium sulphate + Aluminium chloride
(iii) Sodium + Water `rarr` Sodium hydroxide + Hydrogen

Explanation

(i) `H_(2)(g)+Cl_(2)(g)rarr2HCl(g)`
(ii) `3BaCl_(2)(aq)+Al_(2)(SO_(4))_(3)(aq)rarr3BaSO_(4)(s)+2AlCl_(3)(aq)`
(iii) `2Na(s)+2H_(2)O(l)rarr2NaOH(aq)+H_(2)(g)`