eVidyaKosh: Write the balanced equation for the following chemical reactions:

(i) Hydrogen + Chlorine → Hydrogen chloride

(ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride

(iii) Sodium + Water → Sodium hydroxide + Hydrogen

Here are the balanced chemical equations for the given reactions:

(i) Hydrogen + Chlorine → Hydrogen chloride

$\text{H}_2 + \text{Cl}_2 \rightarrow 2\text{HCl}$ (ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride

$3\text{BaCl}_2 + \text{Al}_2(\text{SO}_4)_3 \rightarrow 3\text{BaSO}_4 + 2\text{AlCl}_3$ (iii) Sodium + Water → Sodium hydroxide + Hydrogen

$2\text{Na} + 2\text{H}_2\text{O} \rightarrow 2\text{NaOH} + \text{H}_2$

Both reactions are now balanced with respect to the number of atoms of each element on both sides.