DP Chemistry (last assessment 2024)
Question 18M.3.hl.TZ1.15c
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.hl.TZ1.15c |
| Level | hl | Paper | 3 | Time zone | TZ1 |
| Command term | Justify, Predict | Question number | c | Adapted from | N/A |
c.
[Maximum mark: 1]
18M.3.hl.TZ1.15c
Photovoltaic cells are much less hazardous than nuclear fission.
(c)
The structure of two dyes used in DSSCs are shown.
Predict, giving a reason, which dye will absorb light of longer wavelength.
[1]
Markscheme
B AND has greater/more «extensive» conjugation
Accept “more alternating single and double bonds”.
[1 mark]
