DP Chemistry (last assessment 2024)
Question 22M.2.sl.TZ1.3a
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.sl.TZ1.3a |
| Level | sl | Paper | 2 | Time zone | TZ1 |
| Command term | Deduce | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
22M.2.sl.TZ1.3a
Magnesium is a reactive metal often found in alloys.
(a)
Magnesium can be produced by the electrolysis of molten magnesium chloride.
Write the half-equation for the formation of magnesium.
[1]
Markscheme
Mg2+ + 2 e- → Mg ✔
Do not penalize missing charge on electron.
Accept equation with equilibrium arrows.
Examiners report
Unfortunately, only 40% of the students could write this quite straightforward half equation.
