A rigid sealed test vessel contains a fixed mass of gas. The pressure is recorded as the vessel is warmed.
| Temperature in °C | Pressure in kPa |
|---|---|
| 20 | 100 |
| 40 | 107 |
| 60 | 114 |
| 80 | 121 |
The vessel must not be used above a pressure of 130 kPa. The gas is at 120 °C after further warming.
Explain, using the readings and in terms of particles, whether the pressure limit is likely to have been exceeded at 120 °C.
108 exam-style questions on Edexcel GCSE Physics 14.3 Gas pressure and temperature, covering 14.3.1 Gas pressure and particle motion, 14.3.2 Temperature and pressure at constant volume, 14.3.3 Absolute zero and the kelvin scale, 14.3.4 Compressing and expanding gases, 14.3.5 Volume and pressure at constant temperature, and 14.3.6 Doing work on a gas. Each one has a worked solution and a mark scheme showing where the marks go.