Formula Used:
From: | To: |
Definition: Reduced Molar Volume for Real Gas of a fluid is computed from the ideal gas law at the substance's critical pressure and temperature per mole.
Purpose: This calculator helps determine the reduced molar volume of real gases using the Clausius equation, which accounts for deviations from ideal gas behavior.
The calculator uses the formula:
Where:
Details: Calculating reduced properties helps in comparing real gas behavior to ideal gases and is essential for accurate thermodynamic calculations in chemical engineering.
Tips: Enter the temperature in Kelvin, pressure in Pascals, Clausius parameters a and b, and molar volume in m³/mol. Default values are provided for common conditions.
Q1: What are typical values for Clausius parameters?
A: Parameters vary by gas. For example, CO₂ has a ≈ 0.401 Pa·m⁶/mol² and b ≈ 4.27×10⁻⁵ m³/mol.
Q2: Why use reduced properties?
A: Reduced properties allow comparison of different gases at equivalent states relative to their critical points.
Q3: How accurate is the Clausius equation?
A: It's moderately accurate for many real gases, especially at moderate pressures and temperatures.
Q4: What's the difference between b and b'?
A: b' is the reduced form of the b parameter, accounting for molecular volume.
Q5: When would this calculation be used?
A: In chemical process design, gas storage calculations, and thermodynamic analysis of real gas systems.