DP Chemistry (last assessment 2024)
Question 19M.3.hl.TZ2.b
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.hl.TZ2.b |
| Level | hl | Paper | 3 | Time zone | TZ2 |
| Command term | Suggest | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
19M.3.hl.TZ2.b
Polymers have a wide variety of uses but their disposal can be problematic.
The infrared (IR) spectrum of polyethene is given.
Suggest how the IR spectrum of polychloroethene would diff er, using section 26 of the data booklet.
[1]
Markscheme
«strong additional» absorption at 600–800 «cm–1» [✔]
Examiners report
Almost all candidates received the mark for identifying the correct absorption band for polychloroethene.
