DP Chemistry (first assessment 2025)
Question 22M.2.SL.TZ1.5b(i)
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.SL.TZ1.5b(i) |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Draw | Question number | b(i) | Adapted from | N/A |
b(i).
[Maximum mark: 1]
22M.2.SL.TZ1.5b(i)
(b(i))
Draw the structural formula of the alkene required.
[1]
Markscheme
Examiners report
Good performance; some had a H and CH3 group on each C atom across double bond instead of having two H atoms on one C and two CH3 groups on the other.
Syllabus sections
Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.4—Electron-pair sharing reactions » Reactivity 3.4.5—Alkenes are susceptible to electrophilic attack because of the high electron density of the carbon–carbon double bond. These reactions lead to electrophilic addition. Deduce equations for the reactions of alkenes with water, halogens, and hydrogen halides.