1. What is Critical Molar Volume of Wohl's Real Gas?

Definition: Critical Molar Volume is the volume occupied by gas at critical temperature and pressure per mole according to Wohl's model.

Purpose: This calculator helps determine 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)
• \( [R] \) — Universal gas constant (8.314 J/mol·K)
• \( T'c \) — Critical Temperature (K)
• \( P,c \) — Critical Pressure (Pa)

Explanation: The formula relates critical molar volume to the critical temperature and pressure of the gas.

3. Importance of Critical Molar Volume

Details: Critical parameters are essential for understanding phase behavior and designing processes involving real gases.

4. Using the Calculator

Tips: Enter the critical temperature in Kelvin and critical pressure in Pascals. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of critical molar volume?
A: It represents the volume occupied by one mole of gas at its critical point, important for phase behavior calculations.

Q2: How does this differ from ideal gas behavior?
A: Wohl's model accounts for real gas behavior at high pressures and near critical conditions.

Q3: What units should I use for input?
A: Temperature must be in Kelvin and pressure in Pascals for accurate results.

Q4: Can I use this for any gas?
A: Yes, as long as you have the correct critical temperature and pressure values for the specific gas.

Q5: Why is the universal gas constant used?
A: It's a fundamental constant that relates energy, temperature, and amount of substance in thermodynamic equations.