Critical Temperature Formula:
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Definition: Critical Temperature of Real Gas is the highest temperature at which the substance can exist as a liquid. At this point, phase boundaries vanish, and the substance can exist both as a liquid and vapor.
Purpose: This calculator determines the critical temperature based on Wohl parameter 'a' and other actual and reduced parameters of the gas.
The calculator uses the formula:
Where:
Explanation: The formula relates the critical temperature to the Wohl parameter and the ratio of actual to reduced parameters.
Details: Knowing the critical temperature is essential for understanding phase behavior, designing chemical processes, and predicting gas properties under different conditions.
Tips: Enter all required parameters with appropriate units. All values must be positive numbers. The calculator will compute the critical temperature in Kelvin.
Q1: What is Wohl parameter 'a'?
A: It's an empirical parameter characteristic to the equation obtained from Wohl model of real gas, representing intermolecular forces.
Q2: What are reduced parameters?
A: Reduced parameters are dimensionless quantities obtained by dividing the actual parameter by its critical value.
Q3: Why is critical temperature important?
A: It determines the highest temperature at which a gas can be liquefied by pressure alone.
Q4: What units should I use for input?
A: Use Pascals for pressure, cubic meters for volume, and Kelvin for temperature.
Q5: Can this calculator be used for all gases?
A: Yes, but accuracy depends on how well the Wohl equation models the particular gas.