The ideal gas law relates an equilibrium gas state to its amount of substance.
Difficulty
Beginner
Read time
5 min
Prerequisites
Basic algebra and consistent SI units
Source
OpenStax, College Physics 2e, §13.3 (Paul Peter Urone and Roger Hinrichs)Textbook reference retained from the OpenFormulaGraph dataset; adaptation credits and license are provided below.
Adapted from OpenFormulaGraph, under CC BY 4.0.
FormuLab adapted the notation, explanations, assumptions, and topic placement, and expanded the numerical check into a worked example.
The ideal gas law relates an equilibrium gas state to its amount of substance. Absolute pressure and kelvin temperature are essential. Real gases can deviate from this approximation, particularly near condensation or at high density.
| Symbol | Meaning | Units |
|---|---|---|
| Absolute gas pressure | ||
| Gas volume | ||
| Amount of gas | ||
| Universal molar gas constant | ||
| Absolute temperature |
Estimate pressure from temperature, volume, and amount.
Compare equilibrium gas states.
An ideal gas occupies 0.0224 m³ and contains 1.00 mol at 273.15 K. Using R = 8.314 J/(mol·K), find its absolute pressure.
Textbook reference retained from the OpenFormulaGraph dataset; adaptation credits and license are provided below.
Adapted from OpenFormulaGraph, under CC BY 4.0.
FormuLab adapted the notation, explanations, assumptions, and topic placement, and expanded the numerical check into a worked example.
Assumptions
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