Pressure of Gas Formula:
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Definition: This calculator determines the actual pressure of a real gas using the Wohl equation parameters, reduced properties, and actual temperature.
Purpose: It helps in thermodynamics calculations for real gases where ideal gas law doesn't apply accurately.
The calculator uses the formula:
Where:
Explanation: The formula relates reduced properties to actual properties using the Wohl equation parameters.
Details: Accurate pressure calculation is essential for designing chemical processes, predicting phase behavior, and ensuring safety in high-pressure systems.
Tips: Enter the reduced pressure, actual temperature (in Kelvin), reduced temperature, and Wohl parameter b. All values must be > 0.
Q1: What are reduced properties?
A: Reduced properties are the actual property divided by the critical property of the substance (P/Pc, T/Tc).
Q2: What is Wohl parameter b?
A: It's an empirical parameter in the Wohl equation that accounts for molecular volume and interactions in real gases.
Q3: When should I use this calculator?
A: When working with real gases at high pressures or low temperatures where ideal gas law is inaccurate.
Q4: What units does this calculator use?
A: Pressure is in Pascals, temperature in Kelvin, and other parameters are dimensionless.
Q5: How accurate is this calculation?
A: Accuracy depends on how well the Wohl equation fits your specific gas and conditions.