DP Chemistry (last assessment 2024)
Question 21N.1.sl.TZ0.22
| Date | November 2021 | Marks available | [Maximum mark: 1] | Reference code | 21N.1.sl.TZ0.22 |
| Level | sl | Paper | 1 | Time zone | TZ0 |
| Command term | Determine | Question number | 22 | Adapted from | N/A |
22.
[Maximum mark: 1]
21N.1.sl.TZ0.22
What is the change in the oxidation state of oxygen?
2Fe2+ (aq) + H2O2 (aq) + 2H+ (aq) → 2H2O (l) + 2Fe3+ (aq)
A. +1
B. 0
C. −1
D. −2
[1]
Markscheme
C