15.2.2—The equation of state for an ideal gas expressed as pV = nRT

For an ideal gas, pressure p, volume V, amount n and thermodynamic temperature T satisfy pV=nRT.

Use pascals, cubic metres, moles and kelvin with R=8.31 J mol⁻¹ K⁻¹. Check whether the gas is dilute enough for the ideal model.

One mole at 300 K in 0.0249 m³ has pressure about 1.00×10⁵ Pa.

pV=nRT is not a universal exact law for real gases under all conditions.