DP Chemistry (last assessment 2024)
Question 21N.2.sl.TZ0.5a
| Date | November 2021 | Marks available | [Maximum mark: 1] | Reference code | 21N.2.sl.TZ0.5a |
| Level | sl | Paper | 2 | Time zone | TZ0 |
| Command term | Formulate | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
21N.2.sl.TZ0.5a
Phosphoric acid, H3PO4, can undergo stepwise neutralization, forming amphiprotic species.
(a)
Formulate an equation for the reaction of one mole of phosphoric acid with one mole of sodium hydroxide.
[1]
Markscheme
H3PO4 (aq) + NaOH (aq) → NaH2PO4 (aq) + H2O (l) ✔
Accept net ionic equation.
