DP Chemistry (first assessment 2025)
Question 22M.2.SL.TZ2.d(i)
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.SL.TZ2.d(i) |
| Level | SL | Paper | 2 | Time zone | TZ2 |
| Command term | State | Question number | d(i) | Adapted from | N/A |
d(i).
[Maximum mark: 1]
22M.2.SL.TZ2.d(i)
State the product formed from the reaction of SO3 with water.
[1]
Markscheme
sulfuric acid/H2SO4 ✔
Accept “disulfuric acid/H2S2O7”.
Examiners report
6(d)(i)-(ii): These simple questions could be expected to be answered by all HL candidates. However 20% of the candidates suggested hydroxides or hydrogen as products of an aqueous dissolution of sulphur oxide. In the case of the definition of a strong Brønsted-Lowry acid, only 50% got both marks, often failing to define "strong" but in other cases defining them as bases even.
Syllabus sections
Structure 3. Classification of matter » Structure 3.1—The periodic table: Classification of elements » Structure 3.1.5—Metallic and non-metallic properties show a continuum. This includes the trend from basic metal oxides through amphoteric to acidic non-metal oxides. Deduce equations for the reactions with water of the oxides of group 1 and group 2 metals, carbon and sulfur.