DP Chemistry (last assessment 2024)
Question 19M.2.hl.TZ1.2a
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.hl.TZ1.2a |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Identify | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
19M.2.hl.TZ1.2a
Benzoic acid, C6H5COOH, is another derivative of benzene.
(a)
Identify the wavenumber of one peak in the IR spectrum of benzoic acid, using section 26 of the data booklet.
[1]
Markscheme
Any wavenumber in the following ranges:
2500−3000 «cm−1» [✔]
1700−1750 «cm−1» [✔]
2850−3090 «cm−1» [✔]
Examiners report
Most candidates could identify a wavenumber or range of wavenumbers in the IR spectrum of benzoic acid.
