Wohl Parameter c Formula:
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Definition: Wohl parameter c is an empirical parameter characteristic to equation obtained from Wohl model of real gas.
Purpose: It's used in the Wohl equation of state to describe the behavior of real gases, particularly accounting for molecular interactions and volume effects.
The calculator uses the formula:
Where:
Details: Accurate calculation of Wohl parameters is essential for modeling real gas behavior in chemical engineering applications, particularly at high pressures where ideal gas law fails.
Tips: Enter all required parameters. Default values are provided for reference. All values must be positive numbers.
Q1: What are typical values for Wohl parameters?
A: Parameters vary by substance. For example, for CO2: a ≈ 3.59, b ≈ 0.0427, c ≈ 2.42×107.
Q2: Why use reduced parameters?
A: Reduced parameters allow for generalized correlations that can be applied to different substances.
Q3: How accurate is the Wohl equation?
A: It's reasonably accurate for many real gases, though more complex equations (like PR or SRK) may be better for some applications.
Q4: What units should I use?
A: Use consistent SI units: Pascals for pressure, Kelvin for temperature, and m³/mol for volume.
Q5: Can I use this for liquid phases?
A: The Wohl equation can model both gas and liquid phases, but accuracy may vary for liquids.