DP Chemistry (last assessment 2024)
Question 21M.2.sl.TZ1.b(i)
| Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.2.sl.TZ1.b(i) |
| Level | sl | Paper | 2 | Time zone | TZ1 |
| Command term | State | Question number | b(i) | Adapted from | N/A |
b(i).
[Maximum mark: 1]
21M.2.sl.TZ1.b(i)
Iron (II) sulfide reacts with hydrochloric acid to form hydrogen sulfide, H2S.
In aqueous solution, hydrogen sulfide acts as an acid.
State the formula of its conjugate base.
[1]
Markscheme
HS− ✔
