DP Chemistry (last assessment 2024)
Question 18M.2.sl.TZ2.1b
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.2.sl.TZ2.1b |
| Level | sl | Paper | 2 | Time zone | TZ2 |
| Command term | Formulate | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
18M.2.sl.TZ2.1b
A student determined the percentage of the active ingredient magnesium hydroxide, Mg(OH)2, in a 1.24 g antacid tablet.
The antacid tablet was added to 50.00 cm3 of 0.100 mol dm−3 sulfuric acid, which was in excess.
(b)
Formulate the equation for the reaction of H2SO4 with Mg(OH)2.
[1]
Markscheme
H2SO4(aq) + Mg(OH)2(s) → MgSO4(aq) + 2H2O(l)
Accept an ionic equation.
[1 mark]
