DP Chemistry (last assessment 2024)
Question 18N.3.hl.TZ0.d.ii
| Date | November 2018 | Marks available | [Maximum mark: 1] | Reference code | 18N.3.hl.TZ0.d.ii |
| Level | hl | Paper | 3 | Time zone | TZ0 |
| Command term | Outline | Question number | d.ii | Adapted from | N/A |
d.ii.
[Maximum mark: 1]
18N.3.hl.TZ0.d.ii
Chemical energy from redox reactions can be used as a source of electrical energy.
The chemical structure of a photosensitive dye found in blueberries and a schematic diagram of a solar cell are shown.
Outline the effect of sunlight on the dye in the solar cell.
[1]
Markscheme
electrons excited/released «from dye» ✔
Accept “photooxidation/oxidizes dye”.
