DP Chemistry (last assessment 2024)
Question 21M.2.sl.TZ1.3d(i)
| Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.2.sl.TZ1.3d(i) |
| Level | sl | Paper | 2 | Time zone | TZ1 |
| Command term | Write | Question number | d(i) | Adapted from | N/A |
d(i).
[Maximum mark: 1]
21M.2.sl.TZ1.3d(i)
Magnetite, Fe3O4, is another ore of iron that contains both Fe2+ and Fe3+.
In acidic solution, hydrogen peroxide, H2O2, will oxidize Fe2+.
Fe2+ (aq) → Fe3+ (aq) + e−
(d(i))
Write the half-equation for the reduction of hydrogen peroxide to water in acidic solution.
[1]
Markscheme
H2O2(aq) + 2H+(aq) + 2e−→ 2H2O(l) ✔
