DP Chemistry (last assessment 2024)
Question 19M.3.hl.TZ1.c(ii)
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.hl.TZ1.c(ii) |
| Level | hl | Paper | 3 | Time zone | TZ1 |
| Command term | List | Question number | c(ii) | Adapted from | N/A |
c(ii).
[Maximum mark: 1]
19M.3.hl.TZ1.c(ii)
Natural gas is an energy source composed mainly of methane.
List the following products, which are also obtained by fractional distillation, according to decreasing volatility: asphalt, diesel, gasoline, lubricating motor oil.
[1]
Markscheme
gasoline > diesel > lubricating motor oil > asphalt [✔]
Note: Accept products written in this order whether separated by >, comma, or nothing.
Examiners report
Required products of fractional distillation of crude oil to be ranked according to decreasing volatility. This should have been able to be worked out from first principles and did not have to be memorized as one G2 respondent suggested.
