Redlich–Kwong equation of state calculator (V2)

Calculate pressure/volume/temperature, compressibility factor, and fugacity coefficient for liquid/gas/fluid.
Warning: may return a value for a metastable state.

Usage:

Enter the critical temperature and pressure.
Enter two of three quantities, leave blank the field which is to be calculated.
Select units.
Click Calculate to get the missing quantity, compressibility factor, and fugacity coefficient.
Expressions (e.g., 200/132) are accepted in input fields.

Results:

gas: n.a.

liquid: n.a.

Notation:
T = temperature
P = pressure
Vm = molar volume
Tc = critical temperature
Pc = critical pressure
reduced quantities: Tr=T/Tc, Pr=P/Pc, Vr=Vm/(R*Tc/Pc)
Z = Pr*Vr/Tr= P*Vm/(R*T) = compressibility factor
φ = fugacity coefficient
atm = 101325 Pa

Theory (in Czech) – Critical data of selected gases – Version 1 (with reduced quantites) – Version 3 (with units and stability detection)

Critical temperature =	Temperature =	°C	K
Critical pressure =	Pressure =	Pa	kPa	bar	atm	MPa
	Molar volume =	m³/mol	dm³/mol	cm³/mol