Molar Volume Formula:
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Definition: This calculator estimates the molar volume of a real gas using the Modified Berthelot equation, which accounts for deviations from ideal gas behavior.
Purpose: It helps chemists and engineers determine the volume occupied by one mole of a real gas under specific temperature and pressure conditions.
The calculator uses the formula:
Where:
Explanation: The equation modifies the ideal gas law to account for real gas behavior using critical parameters.
Details: Accurate molar volume calculations are essential for gas storage, chemical reactions, and industrial processes involving gases.
Tips: Enter the temperature, pressure, critical pressure, and critical temperature. All values must be positive.
Q1: What is the Modified Berthelot equation?
A: An empirical equation that improves upon the ideal gas law by incorporating critical parameters to better predict real gas behavior.
Q2: When is this equation most accurate?
A: For moderate pressures (not too high) and temperatures above the critical temperature.
Q3: Where can I find critical parameters for gases?
A: Critical properties are tabulated in chemical engineering handbooks and online databases.
Q4: How does this compare to the Van der Waals equation?
A: The Modified Berthelot is simpler but less accurate at very high pressures than Van der Waals.
Q5: What units should I use?
A: Temperature in Kelvin, pressure in Pascals, and the result will be in m³/mol.