DP Chemistry (last assessment 2024)
Question 22M.2.hl.TZ1.1a(i)
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.hl.TZ1.1a(i) |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Deduce | Question number | a(i) | Adapted from | N/A |
a(i).
[Maximum mark: 1]
22M.2.hl.TZ1.1a(i)
When heated in air, magnesium ribbon reacts with oxygen to form magnesium oxide.
(a(i))
Write a balanced equation for the reaction that occurs.
[1]
Markscheme
2 Mg(s) + O2(g) → 2 MgO(s) ✔
Do not accept equilibrium arrows. Ignore state symbols
Examiners report
Done very well. However, it was disappointing to see the formula of oxygen molecule as O and the oxide as Mg2O and MgO2 at HL level.
