DP Chemistry (first assessment 2025)
Question 19M.1A.SL.TZ2.28
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1A.SL.TZ2.28 |
| Level | SL | Paper | 1A | Time zone | TZ2 |
| Command term | Question number | 28 | Adapted from | N/A |
28.
[Maximum mark: 1]
19M.1A.SL.TZ2.28
Which compound contains sulfur with an oxidation state of +6?
A. SO2
B. H2S
C. H2SO3
D. H2SO4
[1]
Markscheme
D
Examiners report
94 % of candidates identified the compound that contains sulfur with an oxidation state of +6.
Syllabus sections
Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.2—Electron transfer reactions » Reactivity 3.2.1—Oxidation and reduction can be described in terms of electron transfer, change in oxidation state, oxygen gain/loss or hydrogen loss/gain. Deduce oxidation states of an atom in a compound or an ion. Identify the oxidized and reduced species and the oxidizing and reducing agents in a chemical reaction.