Wohl Parameter (b) of Real Gas using Wohl Equation given Critical Molar Volume Calculator

Wohl Parameter b Formula:

\[ b = \frac{V'_c}{4} \]

Wohl Parameter (b): m³/mol

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1. What is Wohl Parameter (b) of Real Gas?

Definition: Wohl parameter b is an empirical parameter characteristic to equation obtained from Wohl model of real gas.

Purpose: It helps in the thermodynamic modeling of real gases using the Wohl equation of state.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ b = \frac{V'_c}{4} \]

Where:

\( b \) — Wohl parameter b (m³/mol)
\( V'_c \) — Critical molar volume (m³/mol)

Explanation: The Wohl parameter b is calculated as one-fourth of the critical molar volume of the gas.

3. Importance of Wohl Parameter Calculation

Details: Accurate calculation of Wohl parameters is essential for precise thermodynamic modeling of real gases, particularly in industrial applications.

4. Using the Calculator

Tips: Enter the critical molar volume in m³/mol. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the physical significance of Wohl parameter b?
A: It represents the excluded volume per mole of gas molecules, accounting for the finite size of molecules.

Q2: How is critical molar volume determined?
A: It's typically determined experimentally or estimated from other critical properties using correlations.

Q3: Can this calculator be used for any gas?
A: Yes, as long as you have the critical molar volume for the gas of interest.

Q4: What are typical values for Wohl parameter b?
A: For common gases, values typically range from 0.00001 to 0.0001 m³/mol.

Q5: How does Wohl parameter b relate to van der Waals parameter b?
A: Both represent excluded volume, but they come from different equations of state and may have slightly different values.