DP Chemistry (last assessment 2024)
Question 19N.1.sl.TZ0.14
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.1.sl.TZ0.14 |
| Level | sl | Paper | 1 | Time zone | TZ0 |
| Command term | Identify | Question number | 14 | Adapted from | N/A |
14.
[Maximum mark: 1]
19N.1.sl.TZ0.14
Questions 13 and 14 are about an experiment to measure the enthalpy of combustion, ΔHc, of ethanol, using the apparatus and setup shown.
Which quantity is likely to be the most inaccurate due to the sources of error in this experiment?
A. Mass of ethanol burnt
B. Molecular mass of ethanol
C. Mass of water
D. Temperature change
[1]
Markscheme
D
