Gas Law Calculator
Gas Law
Solve for any variable in the ideal gas law equation PV = nRT given the other three values
atm
L
K
Formula
PV = nRT, where R = 0.08206 L atm / mol K
Frequently Asked Questions
What is the ideal gas law?
The ideal gas law, PV = nRT, relates the pressure, volume, moles, and temperature of an ideal gas. R is the gas constant (0.08206 L atm per mol K).
When does the ideal gas law not apply?
The ideal gas law is less accurate at very high pressures, very low temperatures, and for gases with strong intermolecular forces. In these cases, the van der Waals equation provides better results.
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