DP Chemistry (last assessment 2024)
Question 21M.2.hl.TZ2.3d
| Date | May 2021 | Marks available | [Maximum mark: 2] | Reference code | 21M.2.hl.TZ2.3d |
| Level | hl | Paper | 2 | Time zone | TZ2 |
| Command term | Calculate | Question number | d | Adapted from | N/A |
d.
[Maximum mark: 2]
21M.2.hl.TZ2.3d
Oxidation and reduction reactions can have a variety of commercial uses.
(d)
Calculate the Gibbs free energy change, ΔG⦵, in kJ, for the cell, using section 1 of the data booklet.
[2]
Markscheme
«ΔG⦵ = −nFE⦵ = −6 × 9.65 × 104 × 1.52 =» −880080 «J mol−1»
OR
6 «electrons» ✓
«=» −880 «kJ» ✓
Award [1] for “«+»880”.
Award [2] for correct final answer.
