DP Chemistry (last assessment 2024)
Question 22N.2.hl.TZ0.g.ii
| Date | November 2022 | Marks available | [Maximum mark: 2] | Reference code | 22N.2.hl.TZ0.g.ii |
| Level | hl | Paper | 2 | Time zone | TZ0 |
| Command term | Identify | Question number | g.ii | Adapted from | N/A |
g.ii.
[Maximum mark: 2]
22N.2.hl.TZ0.g.ii
2-Bromobutane can react with cyanide, CN−, in a nucleophilic substitution reaction.
Identify the splitting pattern of the signal of the hydrogen atoms on the circled carbon atoms in 2-bromobutane.
[2]
Markscheme
Splitting pattern of the signal of the hydrogen atoms in circle A:
doublet ✔
Splitting pattern of the signal of the hydrogen atoms in circle B:
triplet ✔
Examiners report
About two thirds of the cohort could deduce the multiplicity of peaks and, if they identified it for one, they usually also identified it for the second.