Free Compressibility Factor Calculator
Calculate the compressibility factor (Z) of a real gas, which measures how much the gas deviates from ideal gas behavior.
atm
L/mol
K
Compressibility Factor (Z)
0.8124
Compressibility Factor (Z) vs Pressure (P)
Compressibility Factor
Formula
Z = PV_m / (RT)
Where:
For an ideal gas, Z = 1. Z < 1 means attractive forces dominate; Z > 1 means repulsive forces dominate.
Example Calculation
A gas at 100 atm, 300 K, has a molar volume of 0.2 L/mol.
- 01Z = PV_m / (RT)
- 02Z = (100 × 0.2) / (0.08206 × 300)
- 03Z = 20 / 24.618
- 04Z = 0.8124
Frequently Asked Questions
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