| Date | May 2019 | Marks available | 1 | Reference code | 19M.1.HL.TZ2.13 |
| Level | Higher level | Paper | Paper 1 | Time zone | 2 |
| Command term | Question number | 13 | Adapted from | N/A |
Question
The equation = constant is applied to a real gas where p is the pressure of the gas, V is its volume and T is its temperature.
What is correct about this equation?
A. It is empirical.
B. It is theoretical.
C. It cannot be tested.
D. It cannot be disproved.
Markscheme
A
Examiners report
This is a Nature of Science question and was poorly answered by candidates. It had a very low discrimination index and 60% of candidates chose response B when A was the accepted answer. The question is in the context of a real gas. For publication this will be made clearer.
