Reduced Pressure Formula:
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Definition: Reduced pressure is the ratio of the actual pressure of a gas to its critical pressure, used in thermodynamic calculations with real gases.
Purpose: It helps in applying corresponding states principle to predict properties of real gases using reduced parameters.
The calculator uses the formula:
Where:
Explanation: The formula relates the actual pressure to reduced pressure using critical parameters of the gas.
Details: Reduced properties are essential for applying the principle of corresponding states, which allows prediction of gas behavior based on critical parameters.
Tips: Enter the actual gas pressure, critical temperature, and critical molar volume. All values must be positive numbers.
Q1: What is the range for reduced pressure?
A: Reduced pressure typically ranges from 0 to 1, where 1 represents the critical pressure.
Q2: Why use reduced parameters?
A: Reduced parameters allow comparison of different gases at similar thermodynamic states.
Q3: What's a typical critical temperature range?
A: Critical temperatures vary widely, from 33K for hydrogen to 647K for water.
Q4: How accurate is this calculation?
A: Accuracy depends on the input values and how well the gas follows Wohl's equation of state.
Q5: Can I use this for any gas?
A: This is specifically for gases following Wohl's model. Different models may require different formulas.