DP Chemistry (last assessment 2024)
Question 18N.3.hl.TZ0.2d.iii
| Date | November 2018 | Marks available | [Maximum mark: 2] | Reference code | 18N.3.hl.TZ0.2d.iii |
| Level | hl | Paper | 3 | Time zone | TZ0 |
| Command term | Deduce | Question number | d.iii | Adapted from | N/A |
d.iii.
[Maximum mark: 2]
18N.3.hl.TZ0.2d.iii
One way of classifying materials is based on the type of bonding present.
Caprolactam reacts with water to form compound X, a monomer.
(d.iii)
Repeating units of several polymers are listed.
The infrared (IR) spectrum of one of these polymers is shown.
Deduce, giving a reason, the name of this polymer and its Resin Identification Code (RIC), using sections 26 and 30 in the data booklet.
[2]
Markscheme
Name and reason:
PET/PETE AND peak for C=O «at 1700–1750 cm–1» ✔
RIC:
1 ✔
Accept “PET/PETE AND peak for C–O «at 1050–1410 cm–1»” for M1.
Accept “PET/PETE AND peak(s) for COO” for M1.
Accept name or abbreviation for polymer.
No ECF for M2.