Critical Molar Volume Formula:
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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.
The calculator uses the formula:
Where:
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.
Details: Critical molar volume is crucial for understanding gas behavior at critical points, designing chemical processes, and predicting phase transitions.
Tips: Enter the Wohl parameter a, critical pressure in Pascals, and critical temperature in Kelvin. All values must be positive numbers.
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.