(a) State Le Chatelier's principle

(b) Use Le Chetelier's principle to deduce the conditions that favour a high yield of ammonia in the Haber process

(c) Give the chemical test for ammonia.

(d) State what would be observed when aqueous ammonia solution is added to:

(i) zinc chloride solution, (ii) copper (II) tetraoxosulohate (V) solution

(e) Explain why the H — N — H bond angle in ammonia is less than that of H — C — H in methane

(f) Give two uses of ammonia.