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Definition: Reduced Molar Volume 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 using the Reduced Redlich Kwong Equation, which is useful in thermodynamics and chemical engineering calculations.
The calculator uses the formula:
Where:
Explanation: The formula is derived from the Redlich-Kwong equation of state in its reduced form, which provides a more accurate description of real gas behavior compared to the ideal gas law.
Details: Accurate calculation of reduced molar volume is essential for predicting gas behavior under various pressure and temperature conditions, particularly near critical points.
Tips: Enter the reduced pressure and reduced temperature values (both must be > 0). The calculator will solve the Reduced Redlich Kwong equation to find the reduced molar volume.
Q1: What are reduced pressure and temperature?
A: Reduced pressure is the ratio of actual pressure to critical pressure. Reduced temperature is the ratio of actual temperature to critical temperature.
Q2: When is this equation most accurate?
A: The Redlich-Kwong equation provides good accuracy for non-polar gases at conditions away from the critical point.
Q3: What does a negative result mean?
A: Negative results may indicate invalid input conditions where the denominator becomes zero or the equation becomes undefined.
Q4: How do I find critical pressure and temperature?
A: These are substance-specific properties that can be found in chemical engineering reference tables.
Q5: Can this be used for liquids?
A: The Redlich-Kwong equation is primarily for gases, though modified versions exist for liquid phases.