Vapor pressure calculator and grapher for over 10,000 organic and inorganic chemicals at your fingertips.
An educational/scientific application for macOS* iPad and iPhone.
One time download cost of $1.99 for macOS or iPad
One time download cost of $0.99 for iPhone**
Vapor pressure is a fundamental concept in thermodynamics and has various practical applications across different fields. Some common uses for vapor pressure include:
- Understanding phase transitions, such as the boiling point of a liquid. When the vapor pressure of a liquid becomes equal to the atmospheric pressure, the liquid will start to boil,
- Meteorology to determine the amount of moisture in the air,
- Understand the behavior of chemicals and their evaporation rates, which is important in processes like distillation, solvent recovery, and separation techniques,
- Relevant in fuel systems, where it affects the volatility and evaporation of gasoline and other fuels, influencing engine performance and emissions,
- Significant in climate science as it affects the greenhouse effect,
- Distillation of substances, as it allows the separation of components based on their different vapor pressures,
- Important in design of HVAC and heat pump systems, where the vapor pressure of the refrigerant must be carefully controlled.
*Intel and Silicon processors running macOS 13 and later and iOS 16 and later.
**iPhone version does NOT have vapor pressure versus temperature plotting capability.
© Steven W. Sharpe