IB Physics HL B 3 4 Empirical Gas Laws Questions
Practise IB Physics HL B.3.4 by analysing multi-state ideal-gas processes, graph transformations and empirical limits of gas laws.
- Syllabus
- First assessment 2025
- Course
- Physics HL
- Level
- HL
Exam points
- Apply pV/T = constant for a fixed mass of gas and use the ideal-gas equation to calculate pressure, volume or temperature changes through isothermal, isobaric or other stated processes.
- Interpret empirical gas-law graphs and proportionalities at constant pressure or volume, and use measured behaviour to decide whether a gas is ideal or whether a relation is empirical.
IB Physics HL B 3 4 Empirical Gas Laws Questions question 1
The equipment shown in the diagram was used by a student to investigate the variation with volume, of the pressure p of air, at constant temperature. The air was trapped in a tube of constant cross-sectional area above a column of oil.
The pump forces oil to move up the tube decreasing the volume of the trapped air.
Outline how the results of this experiment are consistent with the ideal gas law at constant temperature.
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