Actual Molar Volume of Real Gas given Wohl Parameter c and Reduced and Critical Parameters Calculator

Formula Used:

\[ V'_m = V'_r \times \left( \frac{c}{4 \times P_c \times (T'_c)^2} \right)^{1/3} \]

Reduced Molar Volume (V'r):

Wohl Parameter c:

Critical Pressure (Pc):

Critical Temperature (T'c):

Actual Molar Volume (V'm):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Actual Molar Volume of Real Gas?

Definition: The actual molar volume of a real gas is the volume occupied by one mole of the gas at specific temperature and pressure conditions, accounting for real gas behavior.

Purpose: This calculator determines the actual molar volume using the Wohl equation parameters and critical properties of the gas.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ V'_m = V'_r \times \left( \frac{c}{4 \times P_c \times (T'_c)^2} \right)^{1/3} \]

Where:

\( V'_m \) — Actual molar volume of real gas (m³)
\( V'_r \) — Reduced molar volume
\( c \) — Wohl parameter c
\( P_c \) — Critical pressure (Pa)
\( T'_c \) — Critical temperature (K)

Explanation: The formula relates the reduced molar volume to the actual molar volume through the Wohl parameter and critical properties.

3. Importance of Molar Volume Calculation

Details: Accurate molar volume calculations are essential for gas storage, transportation, and process design in chemical engineering applications.

4. Using the Calculator

Tips: Enter the reduced molar volume, Wohl parameter c, critical pressure (in Pascals), and critical temperature (in Kelvin). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the Wohl equation?
A: The Wohl equation is a cubic equation of state used to describe the behavior of real gases.

Q2: How do I find the Wohl parameter c?
A: The Wohl parameter c is typically determined experimentally or from critical property data.

Q3: What are typical units for these calculations?
A: Pressure should be in Pascals, temperature in Kelvin, and volumes in cubic meters.

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

Q5: What's the difference between ideal and real gas molar volume?
A: Real gas molar volume accounts for molecular interactions and finite molecular size, while ideal gas assumes point particles with no interactions.