Answer all questions please

c) Monomer 18 was polymerised using ring-opening metathesis polymerisation (ROMP). (i) Describe one advantage and one disadvantage of ROMP. (2 marks) (ii) Draw the general polymer structure produced by the ROMP of 18. (2 marks) (iii) In a second reaction, reagent 19 was used during the ROMP of monomer 18. Describe the function of 19 and its effect on the resulting polymer. (2 marks) [Total: 25 marks]