DP Chemistry (last assessment 2024)
Question 18M.2.hl.TZ2.4c
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.2.hl.TZ2.4c |
| Level | hl | Paper | 2 | Time zone | TZ2 |
| Command term | Calculate | Question number | c | Adapted from | N/A |
c.
[Maximum mark: 1]
18M.2.hl.TZ2.4c
(c)
Calculate the standard electrode potential, in V, for the BrO3−/Br− reduction half‑equation using section 24 of the data booklet.
[1]
Markscheme
«EΘ = EΘ(BrO3–/Br–) – EΘ(I2/I–)»
«EΘ(BrO3–/Br–) = EΘ + EΘ(I2/I–) = 0.888 + 0.54 =» «+» 1.43 «V»
[1 mark]
