Translate the following statements into chemical equations and then balance them .
(a)Hydrogen gas combines with nitrogen to form ammonia .
(b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.
(c) Barium chloride reacts with aliminium sulphate to give aluminium chloride and a precipitate of barium sulphate.
(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas .

Explanation

(a) `3H_(2)+N_(2)rarr2NH_(3)`
(b) `2H_(2)S+3O_(2)rarr2H_(2)O+2SO_(2)`
(c) `3BaCl_(2)+Al_(2)(SO_(4))_(3)rarr3BaSO_(4)+2AlCl_(3)`
(d) `2K+2H_(2)Orarr2KOH+H_(2)`