Write balanced chemical equations for each of the following:
(i) When excess of ammonia is treated with chlorine.
(ii) An equation to illustrate the reducing nature of ammonia.
(i) 8NH3 [excess] + 3Cl2 ⟶ 6NH4Cl + N2
(ii) 2NH3 + 3CuO ⟶ 3Cu + 3H2O + N2 [g]
