Translate the following statements into chemical equations and then balance them:

(a) Hydrogen gas combines with nitrogen to form ammonia.


(b) Hydrogen sulphide gas bums in air to give water and sulphur dioxide.


(c) Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate to barium sulphate.


(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen

(a) 3H2 (g) + N2 (g) → 2NH3 (g)

(b) 2H2S (g) + 3O2 (g) → 2H2O (l) + 2SO2 (g)


(c) 3BaCl2 (aq) + Al2(SO4)3 (aq) → 2AlCl3 (aq) + 3BaSO4 (s)


(d) 2K (s) + 2H2O (l) → 2KOH (aq) + H2 (g)


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