DP Chemistry (first assessment 2025)
Question 22M.1A.SL.TZ2.11
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.1A.SL.TZ2.11 |
| Level | SL | Paper | 1A | Time zone | TZ2 |
| Command term | Deduce | Question number | 11 | Adapted from | N/A |
11.
[Maximum mark: 1]
22M.1A.SL.TZ2.11
What is the name of the compound with formula Ti3(PO4)2?
A. Titanium phosphate
B. Titanium(II) phosphate
C. Titanium(III) phosphate
D. Titanium(IV) phosphate
[1]
Markscheme
B
Examiners report
71% of candidates were able to name Ti3(PO4)2 correctly. The most commonly chosen distractor was titanium(III) phosphate.
Syllabus sections
Structure 3. Classification of matter » Structure 3.1—The periodic table: Classification of elements » Structure 3.1.6—The oxidation state is a number assigned to an atom to show the number of electrons transferred in forming a bond. It is the charge that atom would have if the compound were composed of ions. Deduce the oxidation states of an atom in an ion or a compound.