Waec Chemistry 1990 Past Questions and Answers

Question 46:

• WAEC 1990

(a)(i) Define the term addition polymerization
(ii) What type of organic compounds undergo addition polymerization
(iii) List two factors which affect the strength of polymers

(b) The diagram below shows some reaction pathways involving ethanol

(i) Write the name and structural of the organic product X
(ii) State the reagent for the conversation indicated as step A.
(iii) What type of reaction will ethanol undergo CH\(_3\)CH\(_2\)COOH during the process of conversation indicated as step B?

(c)(i) Write three balanced equation for the complete combustion of ethanol in :date the volume of oxygen required at s.t.p for the complete combustion of ethanol. (H = 1, C = 12, O = 16, molar volume of gases at s.t.p. = 22.4 dm\(^3\))

(d)( i} State two substances produced when coal is heated in the absence of air
(ii) What name is given to the process in (d)(i) above?
(iii) State the importance of the non-volatile residue of the process named in (d)(iii) to the iron and steel industry.