Known Variable Selection
Ideal Gas Deviation Indicator
Compressibility Factor (Z)--
Z=1 (Ideal)Deviation likelyNon‑ideal
Awaiting Input
Thermodynamic State
Missing Variable
--
Pressure (P)
--kPa
Volume (V)
--L
Temperature (T)
--K
Moles (n)
--mol
Specific Volume (v = V/n)
--L/mol
Fundamental Equation
PV = nRT
R = 8.314 J/(mol·K) = 0.08314 L·bar/(mol·K) = 0.082057 L·atm/(mol·K)
Using R = 8.314 L·kPa/(mol·K) for SI units.
Ideal gas assumption: Z=PV/(nRT)=1
Deviation expected at high P (>50 bar) or low T (near condensation).
P‑V Diagram (Isotherms)
T‑V Diagram (Isobars)