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Definition: Saturated pressure of component 2 is the pressure at which the given component 2 liquid and its vapour or a given solid and its vapour can co-exist in equilibrium, at a given temperature.
Purpose: This calculator helps determine the saturated pressure using the second virial coefficient and saturated fugacity coefficient.
The calculator uses the formula:
Where:
Explanation: The natural log of the fugacity coefficient is multiplied by the gas constant and temperature, then divided by the second virial coefficient to obtain the saturated pressure.
Details: Accurate calculation of saturated pressure is crucial for phase equilibrium studies, chemical process design, and thermodynamic property estimation.
Tips: Enter the saturated fugacity coefficient, temperature (in Kelvin), and second virial coefficient (in m³). All values must be > 0.
Q1: What is the second virial coefficient?
A: The second virial coefficient describes the contribution of the pair-wise potential of component 2 with itself to the pressure of the gas.
Q2: What is a typical value for the fugacity coefficient?
A: The saturated fugacity coefficient typically ranges between 0.9 and 1.2 for many substances near their normal boiling points.
Q3: What temperature range is this formula valid for?
A: This formula is generally valid for temperatures below the critical temperature of the component.
Q4: How accurate is this calculation?
A: The accuracy depends on the quality of input data and the assumption that the virial equation is valid for the system.
Q5: Can I use this for mixtures?
A: This specific formula is for pure component 2. For mixtures, additional terms and coefficients would be needed.