Ideal Gas Law (Pressure)
Ideal Gas Law (Pressure)
The ideal gas law ties together pressure, volume, temperature and amount of gas — the workhorse equation of thermodynamics.
Solving pV = nRT for pressure gives p = nRT/V. where n is the amount of substance, R the universal gas constant, T the absolute temperature and V the volume.
Inputs
n := 2 mol=2 mol
R := 8.314 J/(mol·K)=8.31 kg·m^2/K/mol/s^2
T := 300 K=300 K
V := 0.05 m^3=0.05 m^3
Apply the ideal gas law solved for pressure.
p := n·R·T/V=99768 Pa
Results
The result is the absolute pressure. The law is accurate for gases well above their boiling point and below moderate pressures; dense or near-condensing gases need a real-gas equation.
Assumptions & limitations
- Ideal-gas behaviour.
- Absolute (kelvin) temperature.
- Equilibrium, single-phase gas.