DP Chemistry (first assessment 2025)
Question 21M.2.SL.TZ1.5a(ii)
| Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.2.SL.TZ1.5a(ii) |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | State | Question number | a(ii) | Adapted from | N/A |
a(ii).
[Maximum mark: 1]
21M.2.SL.TZ1.5a(ii)
(a(ii))
State the molecular formula of the next member of the homologous series to which ethene belongs.
[1]
Markscheme
C3H6 ✔
Accept structural formula.
Syllabus sections
Structure 3. Classification of matter » Structure 3.2—Functional groups: Classification of organic compounds » Structure 3.2.3—A homologous series is a family of compounds in which successive members differ by a common structural unit, typically CH2. Each homologous series can be described by a general formula. Identify the following homologous series: alkanes, alkenes, alkynes, halogenoalkanes, alcohols, aldehydes, ketones, carboxylic acids, ethers, amines, amides and esters.