1. What is Actual Temperature of Wohl's Real Gas?

Definition: This calculator determines the actual temperature of a real gas using Wohl's equation of state, based on reduced temperature, critical pressure, and critical molar volume.

Purpose: It helps in thermodynamic calculations for real gases where ideal gas assumptions don't hold true.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Actual temperature (Kelvin)
• \( T_r \) — Reduced temperature (dimensionless)
• \( P_c \) — Critical pressure (Pascal)
• \( V'_c \) — Critical molar volume (m³/mol)
• \( [R] \) — Universal gas constant (8.314 J/mol·K)

Explanation: The formula relates the actual temperature to reduced temperature and critical parameters through Wohl's equation.

3. Importance of Temperature Calculation

Details: Accurate temperature determination is crucial for predicting gas behavior in industrial processes, chemical reactions, and thermodynamic systems.

4. Using the Calculator

Tips: Enter the reduced temperature (dimensionless), critical pressure in Pascals, and critical molar volume in m³/mol. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What is reduced temperature?
A: Reduced temperature is the ratio of the actual temperature to the critical temperature of the substance.

Q2: Where can I find critical parameters?
A: Critical properties are tabulated in thermodynamic reference books for common substances.

Q3: Why use Wohl's equation?
A: Wohl's equation provides better accuracy for real gases than ideal gas law, especially near critical conditions.

Q4: What are typical critical pressure values?
A: Critical pressures vary widely - from 2.24 MPa for helium to 7.38 MPa for water.

Q5: How accurate is this calculation?
A: Accuracy depends on the quality of input parameters and how well Wohl's equation fits your specific gas.