DP Chemistry (last assessment 2024)
Question 19M.2.hl.TZ1.5d(ii)
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.hl.TZ1.5d(ii) |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Suggest | Question number | d(ii) | Adapted from | N/A |
d(ii).
[Maximum mark: 1]
19M.2.hl.TZ1.5d(ii)
Both vinegar (a dilute aqueous solution of ethanoic acid) and bleach are used as cleaning agents.
(d(ii))
Suggest a suitable indicator for the titration, using section 22 of the data booklet.
[1]
Markscheme
methyl orange
OR
bromophenol blue
OR
bromocresol green
OR
methyl red [✔]
Examiners report
Generally well done although a number of candidates chose bromothymol blue as a suitable indicator for weak base with a strong acid.
