Write balanced chemical equations for the following reactions :
Hydrogen sulphide gas burns in air to give water and sulphur dioxide
(ii) Barium chloride reacts in aqueous solution reacts with zinc sulphate to give zinc chloride and barium sulphate.

Explanation

`2H_(2)S(g) + 3O_(2)(g) to 2H_(2)O (l) + 2SO_(2)(g)`
(ii) `BaCl_(2)(aq) + ZnSO_(4)(aq) to underset("(White ppt.)")(BaSO_(4)(S)) + ZnCl_(2)(aq)`