Critical Temperature of Real Gas using Wohl Parameter c and other Actual and Reduced Parameters Calculator

Critical Temperature Formula:

\[ T'_c = \sqrt{\frac{c}{4 \times \left(\frac{P_{rg}}{P_r}\right) \times \left(\left(\frac{V'_m}{V'_r}\right)^3\right)}} \]

Wohl Parameter c:

Pressure of Gas (P_rg):

Reduced Pressure (P_r):

Molar Volume of Real Gas (V'_m):

m³

Reduced Molar Volume (V'_r):

m³

Critical Temperature (T'_c):

Unit Converter ▲

Unit Converter ▼

From:	To:

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 phase boundaries vanish, and the substance can exist both as a liquid and vapor.

Purpose: This calculator helps determine the critical temperature using Wohl parameters and other reduced properties.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ T'_c = \sqrt{\frac{c}{4 \times \left(\frac{P_{rg}}{P_r}\right) \times \left(\left(\frac{V'_m}{V'_r}\right)^3\right)}} \]

Where:

\( T'_c \) — Critical Temperature of Real Gas (Kelvin)
\( c \) — Wohl parameter c (empirical parameter)
\( P_{rg} \) — Pressure of Gas (Pascal)
\( P_r \) — Reduced Pressure (dimensionless)
\( V'_m \) — Molar Volume of Real Gas (m³)
\( V'_r \) — Reduced Molar Volume (m³)

Explanation: The formula calculates critical temperature based on Wohl's equation of state and reduced properties.

3. Importance of Critical Temperature Calculation

Details: Knowing the critical temperature is essential for understanding phase behavior, designing chemical processes, and predicting thermodynamic properties of real gases.

4. Using the Calculator

Tips: Enter all required parameters with positive values. The calculator will compute the critical temperature in Kelvin.

5. Frequently Asked Questions (FAQ)

Q1: What are Wohl parameters?
A: Wohl parameters are empirical constants used in Wohl's equation of state to describe the behavior of real gases.

Q2: How do I obtain reduced properties?
A: Reduced properties are obtained by dividing the actual property by its corresponding critical property.

Q3: What is the significance of critical temperature?
A: Above the critical temperature, a gas cannot be liquefied by pressure alone, regardless of how high the pressure is.

Q4: Can this calculator be used for all gases?
A: Yes, as long as you have the correct Wohl parameters and reduced properties for the specific gas.

Q5: What units should I use for inputs?
A: Use Pascals for pressure, cubic meters for volume, and Kelvin for temperature. Reduced properties are dimensionless.