This calculator is designed for chemical engineers and researchers to compute fugacity coefficients, which are crucial for understanding the behavior of gases under non-ideal conditions.
This calculator uses the Peng-Robinson equation of state as the primary formula source. All calculations are based rigorously on this source: Peng, D.-Y.; Robinson, D.B. A New Two-Constant Equation of State. Ind. Eng. Chem. Fundamen., 1976, 15 (1), 59–64.
All calculations are rigorously based on the formulas and data provided by this source.
The fugacity coefficient is calculated using the following equation:
Consider a gas at 5000 Pa and 300 K with a molar volume of 0.002 m³/mol. The fugacity coefficient can be calculated as follows:
Input values: P = 5000 Pa, v = 0.002 m³/mol, T = 300 K.
Using the formula: \[\phi = \exp \left(\frac{5000 \times 0.002}{8.314 \times 300} - 1\right)\]
Result: φ ≈ 0.98.
A fugacity coefficient is a factor that adjusts the ideal gas law to account for the non-ideal behavior of gases.
Fugacity represents the effective pressure exerted by a gas, considering non-ideal behaviors.
The Peng-Robinson equation is widely used in chemical engineering for its accuracy in predicting the behavior of non-ideal gases.
It is best suited for gases behaving non-ideally. Check the assumptions of the Peng-Robinson equation for specific applications.
Input pressure in Pascals, temperature in Kelvin, and volume in cubic meters for consistent results.