1. What is Critical Temperature of Real Gas?

Definition: Critical Temperature of Real Gas is the highest temperature at which the substance can exist as a liquid. At this temperature, the phase boundaries vanish, and the substance can exist both as a liquid and vapor.

Purpose: This calculator helps determine the critical temperature using the Wohl equation, which is important for understanding gas behavior under different conditions.

2. How Does the Calculator Work?

The calculator uses the Wohl equation formula:

Where:

• \( T'_c \) — Critical temperature (Kelvin)
• \( c \) — Wohl parameter c (empirical parameter)
• \( P_{c} \) — Critical pressure (Pascal)
• \( V'_c \) — Critical molar volume (m³/mol)

Explanation: The formula calculates the critical temperature based on the Wohl parameter and critical properties of the gas.

3. Importance of Critical Temperature Calculation

Details: Knowing the critical temperature is essential for understanding phase behavior, designing chemical processes, and predicting gas properties under different conditions.

4. Using the Calculator

Tips: Enter the Wohl parameter c, critical pressure in Pascals, and critical molar volume in m³/mol. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the Wohl parameter c?
A: Wohl parameter c is an empirical parameter characteristic to equation obtained from Wohl model of real gas.

Q2: How do I find the critical pressure and molar volume?
A: These are typically determined experimentally or can be found in chemical engineering reference tables for common substances.

Q3: What units should I use for inputs?
A: Use Pascals for pressure and cubic meters per mole for volume to get results in Kelvin.

Q4: Can I use this for any real gas?
A: This calculation is specific to gases that follow the Wohl equation of state.

Q5: Why is critical temperature important?
A: It helps determine conditions for liquefaction and supercritical fluid behavior, important in many industrial processes.