# Difference between revisions of "Equation of State: Ideal Gas"

The ideal gas equation of state, developed by Benoît Paul Émile Clapeyron in 1834 (Ref. 1) is given by:

$\left. p V = N k_B T \right.$

or

$\left. p V = n R T \right.$

where:

• $p$ is the pressure
• $V$ is the volume
• $N$ is the number of molecules
• $n$ is the number of moles
• $T$ is the absolute temperature
• $k_B$ is the Boltzmann constant
• $R$ is the molar gas constant.