Actual Pressure of Real Gas given Wohl Parameter b and Reduced and Actual Parameters Calculator

Pressure of Gas Formula:

\[ P_{gas} = P_{reduced} \times \left( \frac{[R] \times \left( \frac{T_{real}}{T_{reduced}} \right)}{15 \times b} \right) \]

Reduced Pressure:

Temperature of Real Gas (K):

Reduced Temperature:

Wohl Parameter b:

Pressure of Gas (Pa):

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1. What is Actual Pressure of Real Gas Calculator?

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.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_{gas} = P_{reduced} \times \left( \frac{[R] \times \left( \frac{T_{real}}{T_{reduced}} \right)}{15 \times b} \right) \]

Where:

\( P_{gas} \) — Actual pressure of real gas (Pascal)
\( P_{reduced} \) — Reduced pressure (dimensionless)
\( [R] \) — Universal gas constant (8.314 J/mol·K)
\( T_{real} \) — Temperature of real gas (Kelvin)
\( T_{reduced} \) — Reduced temperature (dimensionless)
\( b \) — Wohl parameter b (empirical parameter)

Explanation: The formula relates reduced properties to actual properties using the Wohl equation parameters.

3. Importance of Pressure Calculation

Details: Accurate pressure calculation is essential for designing chemical processes, predicting phase behavior, and ensuring safety in high-pressure systems.

4. Using the Calculator

Tips: Enter the reduced pressure, actual temperature (in Kelvin), reduced temperature, and Wohl parameter b. All values must be > 0.

5. Frequently Asked Questions (FAQ)

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.