1. What is Critical Molar Volume using Wohl Equation?

Definition: This calculator determines the critical molar volume of a real gas using the Wohl equation, based on the Wohl parameter a, critical pressure, and critical temperature.

Purpose: It helps chemical engineers and researchers calculate the critical molar volume which is essential for understanding gas behavior under critical conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V'_c \) — Critical molar volume (m³/mol)
• \( a \) — Wohl parameter a
• \( P_c \) — Critical pressure (Pascal)
• \( T'_c \) — Critical temperature (Kelvin)

Explanation: The formula calculates the critical molar volume by taking the square root of the Wohl parameter divided by six times the product of critical pressure and critical temperature.

3. Importance of Critical Molar Volume

Details: Critical molar volume is crucial for understanding gas behavior at critical points, designing chemical processes, and predicting phase transitions.

4. Using the Calculator

Tips: Enter the Wohl parameter a, critical pressure in Pascals, and critical temperature in Kelvin. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the Wohl parameter a?
A: It's an empirical parameter characteristic to the Wohl equation of state for real gases.

Q2: How do I find critical pressure and temperature?
A: These are typically available in chemical data tables for various substances.

Q3: What units should I use?
A: Use Pascals for pressure, Kelvin for temperature, and the calculator will output m³/mol.

Q4: Why is critical molar volume important?
A: It helps predict gas behavior at critical points and is essential for process design.

Q5: Can this be used for all gases?
A: Yes, as long as you have the correct Wohl parameter and critical properties for the gas.