DP Chemistry (last assessment 2024)
Question 22M.2.hl.TZ1.6b(ii)
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.hl.TZ1.6b(ii) |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Draw | Question number | b(ii) | Adapted from | N/A |
b(ii).
[Maximum mark: 1]
22M.2.hl.TZ1.6b(ii)
Nitric acid is usually produced by the oxidation of ammonia.
A mixture of nitric acid and sulfuric acid can be used to convert benzene to nitrobenzene, C6H5NO2.
(b(ii))
Draw the structural formula of the carbocation intermediate produced when this electrophile attacks benzene.
[1]
Markscheme
Accept any of the five structures.
Do not accept structures missing the positive charge.
Examiners report
Again, many had difficulty drawing the structural formula of the carbocation intermediate produced in the reaction.
