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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:
Explanation: The formula accounts for molecular interactions (a) and finite molecular volume (b) that deviate from ideal gas behavior.
Details: Calculating reduced properties helps predict gas behavior under various conditions and is essential in thermodynamics and chemical engineering applications.
Tips: Enter all required parameters with appropriate units. Default values are provided for Clausius parameters a and b, and critical molar volume.
Q1: What are typical values for Clausius parameters?
A: Parameters a and b are substance-specific. For example, for CO₂: a ≈ 0.3653 Pa·m⁶/mol², b ≈ 4.28×10⁻⁵ m³/mol.
Q2: How do I find critical molar volume?
A: Critical molar volume is a substance property found in chemical databases or calculated from critical temperature and pressure.
Q3: Why use reduced properties?
A: Reduced properties allow generalized correlations that work for many substances (law of corresponding states).
Q4: What's the range for reduced molar volume?
A: Typically between 0 and 1, where 1 represents the critical point.
Q5: How accurate is the Clausius equation?
A: It's moderately accurate for gases at moderate pressures but less accurate near the critical point.