DP Chemistry (first assessment 2025)
Question 22M.2.HL.TZ1.5d(i)
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.HL.TZ1.5d(i) |
| Level | HL | Paper | 2 | Time zone | TZ1 |
| Command term | Identify | Question number | d(i) | Adapted from | N/A |
d(i).
[Maximum mark: 1]
22M.2.HL.TZ1.5d(i)
(d(i))
Identify the type of reaction.
[1]
Markscheme
«nucleophilic» substitution
OR
SN2 ✔
Accept “hydrolysis”.
Accept SN1
Examiners report
Excellent performance on the type of reaction but with some incorrect answers such as alkane substitution, free radical substitution or electrophilic substitution.
Syllabus sections
Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.4—Electron-pair sharing reactions » Reactivity 3.4.9—Nucleophilic substitution reactions include the reactions between halogenoalkanes and nucleophiles. Describe and explain the mechanisms of the reactions of primary and tertiary halogenoalkanes with nucleophiles.