(a) List three properties of a system that is in a state of chemical equilibrium.

 

(b) Consider reaction represented by the following equation: 3H\(_{2(g)}\) + N\(_{2(g)}\) \(\rightleftharpoons\) 2NH\(_{3(g)}\); H = 92KJ

(i) Explain the effect of increasing the temperature of the reaction on the yield of ammonia

(ii) Uses of energy profile diagram to illustrate the effect of a positive catalyst on the rate of either the forward reaction or the reverse reaction.

 

(c) In the extraction of aluminium from bauxite:

(i) outline the procedure used for purifying the ore;

(ii) write equation for the reaction at each electrode, during the electrolysis of the pure alumina;

(iii) state the function of molten cryolite in the electrolytic cell for the extraction.