DP Chemistry (first assessment 2025)
Question 19M.1A.HL.TZ2.13
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1A.HL.TZ2.13 |
| Level | HL | Paper | 1A | Time zone | TZ2 |
| Command term | Question number | 13 | Adapted from | N/A |
13.
[Maximum mark: 1]
19M.1A.HL.TZ2.13
What is the hybridization of carbon and oxygen in methanol?
[1]
Markscheme
A
Examiners report
77 % of the candidates deduced the hydridization of carbon and oxygen in methanal. A teacher commented that it was unusual to ask for the hydridization of oxygen, however, this is a reasonable application of the concept.
Syllabus sections
Structure 2. Models of bonding and structure » Structure 2.2—The covalent model » Structure 2.2.16—Hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals for bonding. Analyse the hybridization and bond formation in molecules and ions. Identify the relationships between Lewis formulas, electron domains, molecular geometry and type of hybridization. Predict the geometry around an atom from its hybridization, and vice versa.