IB Physics SL B.3.4 Empirical gas laws Question Bank
Practise IB Physics SL B.3.4 by applying Boyle, Charles and pressure–temperature relationships to ideal-gas processes and graphs.
- Syllabus
- First assessment 2025
- Course
- Physics SL
- Level
- SL
Exam points
- Use pV, V/T and p/T relationships to calculate unknown pressure, volume or temperature in simple processes.
- Interpret experimental graphs to test ideal-gas behaviour and distinguish isobaric, isothermal or isochoric changes.
B.3.4—Empirical gas laws 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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