The newest 5 of 5 written questions. Open one to see it on the real paper.
Fig. 11.2 represents the formation of the polymer nylon from two monomers, X and Y. Nylon is made in a condensation polymerisation reaction. O H O C + C HO N H N H OH monomer X N H H monomer Y O O C C O N N H H C nylon Fig. 11.2 Describe how monomer X and monomer Y react together to make nylon. Use the information in F...
See it on the paper →Which diagram represents the structure of nylon?
See it on the paper →Nylon is a condensation polymer made from monomer molecules A and B. Fig. 11.2 shows a few of these monomer molecules. B A A B A O O H H O O H H O O C C N N C C N N C C Cl Cl H H Cl Cl H H Cl Cl Fig. 11.2 Fig. 11.3 shows an incomplete section of the nylon molecule. N C Fig. 11.3 Complete Fig. 11.3 to show how a molecul...
See it on the paper →State the formula of the other compound that is formed during the polymerisation to make nylon.
See it on the paper →Which diagram represents part of the structure of nylon?
See it on the paper →Many found this challenging. Candidates often answered in generalised terms about condensation polymerisation reactions, rather than referring to the monomers shown. The most commonly awarded mark was for recognising that water was produced. The strongest candidates recognised that an amide link was formed. Some candidates incorrectly referred to ions.
— Examiner report, May/June 2023, 0654/41 Q11(b) (Cambridge)
The section of a nylon molecule was completed correctly on a few scripts.
— Examiner report, October/November 2019, 0654/43 Q11(d)(ii) (Cambridge)
There were slightly more correct formulae for the other compound formed even from candidates who had not succeeded in completing the diagram of the molecule.
— Examiner report, October/November 2019, 0654/43 Q11(d)(iii) (Cambridge)
Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.