Critical Pressure Formula:
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Definition: This calculator determines the critical pressure of a real gas using the Clausius parameter c along with reduced and actual temperature and volume parameters.
Purpose: It helps in thermodynamic calculations and understanding gas behavior near critical points.
The calculator uses the formula:
Where:
Explanation: The formula relates the critical pressure to temperature and volume parameters through the Clausius equation of state.
Details: Critical pressure is essential for understanding phase behavior, designing chemical processes, and predicting gas-liquid transitions.
Tips: Enter all required parameters with positive values. Temperature should be in Kelvin, volumes in cubic meters.
Q1: What is the Clausius parameter c?
A: It's an empirical parameter characteristic to the equation obtained from Clausius model of real gas.
Q2: How do I get reduced temperature and volume?
A: Reduced parameters are the actual values divided by their critical point values (T/Tc, V/Vc).
Q3: What units does this calculator use?
A: Temperature in Kelvin, volumes in cubic meters, pressure in Pascals.
Q4: When is this calculation most useful?
A: For real gases at high pressures or near critical points where ideal gas law fails.
Q5: What's a typical range for Clausius parameter c?
A: It varies by substance but is typically a small positive number (often 0.001 to 0.1).