DP Chemistry (last assessment 2024)
Question 19M.2.sl.TZ2.b(i)
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.sl.TZ2.b(i) |
| Level | sl | Paper | 2 | Time zone | TZ2 |
| Command term | Deduce | Question number | b(i) | Adapted from | N/A |
b(i).
[Maximum mark: 1]
19M.2.sl.TZ2.b(i)
Ethyne, C2H2, reacts with oxygen in welding torches.
Deduce the Lewis (electron dot) structure of ethyne.
[1]
Markscheme
[✔]
Note: Accept any valid combination of lines, dots and crosses.
Examiners report
The majority of candidates drew the Lewis structure of ethyne. A few teachers commented that they did not cover alkynes assuming they are not included in the syllabus. Please check the current syllabus carefully when preparing students.
