DP Chemistry (last assessment 2024)
Question 19N.3.sl.TZ0.16b
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.3.sl.TZ0.16b |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Formulate | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
19N.3.sl.TZ0.16b
Body fluids have different pH values.
(b)
An antacid contains calcium carbonate and magnesium carbonate.
Write the equation for the reaction of magnesium carbonate with excess stomach acid.
[1]
Markscheme
MgCO3 (s) + 2HCl (aq) → MgCl2 (aq) + CO2 (g) + H2O (l) ✔
NOTE: Accept ionic equation.
