Wohl Parameter (b) of Real Gas given Actual and Reduced Molar Volume Calculator

Wohl Parameter b Formula:

\[ b = \frac{V'_m/V'_r}{4} \]

Wohl Parameter (b):

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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 describing the behavior of real gases by accounting for molecular volume and intermolecular forces.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ b = \frac{V'_m/V'_r}{4} \]

Where:

\( b \) — Wohl parameter b
\( V'_m \) — Molar volume of real gas (m³)
\( V'_r \) — Reduced molar volume (m³)

Explanation: The ratio of actual molar volume to reduced molar volume is divided by 4 to obtain the Wohl parameter b.

3. Importance of Wohl Parameter Calculation

Details: Accurate calculation of Wohl parameters is essential for modeling real gas behavior in chemical engineering and thermodynamics applications.

4. Using the Calculator

Tips: Enter the molar volume of real gas and reduced molar volume in cubic meters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the physical significance of Wohl parameter b?
A: It represents the volume occupied by one mole of gas molecules and accounts for molecular size effects.

Q2: How is reduced molar volume different from actual molar volume?
A: Reduced molar volume is computed from ideal gas law at critical conditions, while actual molar volume is measured under given conditions.

Q3: What units should be used for input values?
A: Both molar volume and reduced molar volume should be in cubic meters (m³).

Q4: Can this calculator be used for any gas?
A: Yes, but accuracy depends on how well the Wohl equation describes the particular gas's behavior.

Q5: Why divide by 4 in the formula?
A: The factor of 4 comes from the Wohl equation's form and provides the best empirical fit for real gas behavior.