The Ideal Gas Law connects the pressure, volume, amount, and temperature of a gas in one equation — a cornerstone of chemistry and thermodynamics.
The Ideal Gas Law connects the pressure, volume, amount, and temperature of a gas in one equation — a cornerstone of chemistry and thermodynamics. Given the temperature and any two of pressure, volume, or moles, this calculator finds the missing quantity.
A gas sample has a volume of 10 L, 0.5 mol, at 300 K. Leaving Pressure blank: Pressure = (0.5 × 0.082057 × 300) / 10 ≈ 1.23 atm.
PV = nRT, relating pressure (P), volume (V), moles of gas (n), the gas constant (R), and temperature (T) for an idealized gas.
Given any three of the four variables (pressure, volume, moles, temperature), it solves for the remaining one using the ideal gas law formula.
It assumes gas particles have no volume and no intermolecular forces — a simplification that works well for most gases under normal conditions but breaks down at very high pressure or low temperature.