(a) Name one product of destructive distillation of coal that is
(i) Solid;
(ii) Liquid;
(iii) Gas. [3 marks]
(b) (i) What is the major component of synthetic gas?
(ii)
Give one reason why synthetic gas is not a major source of air pollution.
[2 marks]
(c) (i) Write a balanced chemical equation for the complete combustion of carbon.
(ii)State two:
I. physical;
II. chemical properties of the product in 7 (c )(i) [ 5 marks]
(d) (i) Name two allotropes of carbon that are
1.
crystalline;
II. amorphous.
(ii) State
one use of
each of the allotropes named in 7(d)(i). [ 8 marks]
(e) (i) By means of balanced chemical equations only, outline the process of manufacture
of H2S04 by contact process.
(ii) State the function of H2S04 in each of the following reaction equations:
1. C2H5OH(l) cone H2S04 →C2H4(g);
II.
Pb(NO3)2(aq) +
H2S04(aq) → PbS04(s) +
2HN03(aq) [ 7 marks]