I would like to ask about the relationship between a substance’s boiling point and pressure
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How can one determine the effect of pressure changes on the boiling point of a substance? How is it calculated under positive pressure, and how is it calculated under negative pressure? Also, how is the amount of vaporization of a substance determined under certain pressure and temperature conditions? Waiting for a reply
Calculated using Antoine’s equation.
This post was last edited by qugd on 1/9/2019 at 11:05. From a thermodynamic perspective, the relationship between a substance’s boiling point and its saturated vapor pressure is governed by the Clapeyron-Clausius equation, while the Antoine equation is a simplified form of this equation under certain specific conditions. For multi-component systems, partial pressures can be calculated based on mole fractions; for components with significant deviations, reference can be made to certain handbooks for adjusted calculations. When using absolute pressure for calculations, there is no issue with negative pressure. The original poster can learn this principle from textbooks on physical chemistry or thermodynamics.
By performing an ASPEN simulation, it is possible to see the relationship between saturated vapor pressure and temperature
Is there a download link for this software? Is it paid or free? {:1_90:}
Look up the address online; once it’s installed, you can crack it