(a)(i) Describe briefly the industrial preparation of ammonia.

(ii) Write a balanced equation for the reaction in (a)(i).

(iii) State one way of increasing the yield of ammonia in 4(a)(i).

(iv) State two uses of ammonia.

 

(b) Describe briefly, one chemical test for each of the following gases in the laboratory: (i) hydrogen; (ii) carbon (IV) oxide; (iii) oxygen.

 

(c)(i) State the composition of water gas.

(ii) List two uses of water gas.

 

(d) Describe briefly a simple experiment to determine the type of hardness in a sample of water.