Search results
374 °C (647 K)
- Vapor refers to a gas phase at a temperature where the same substance can also exist in the liquid or solid state, below the critical temperature of the substance. (For example, water has a critical temperature of 374 °C (647 K), which is the highest temperature at which liquid water can exist.)
en.wikipedia.org/wiki/Vapor
People also ask
What is water vapor pressure versus temperature?
What is vapor pressure in chemistry?
What is the vapor pressure of water at a boiling point?
What is water vapor aqueous vapor?
Water vapor, water vapour or aqueous vapor is the gaseous phase of water. It is one state of water within the hydrosphere. Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice. Water vapor is transparent, like most constituents of the atmosphere. [1]
Online calculator, figures and tables with water saturation (vapor) pressure at temperatures ranging 0 to 370 °C (32 to 700°F) - in Imperial and SI Units.
- Factors That Affect Vapor Pressure
- Vapor Pressure of Water
- How to Calculate Vapor Pressure
- References
The most important factors affecting vapor pressure are temperature and type of molecules: 1. Temperature: Temperature has the greatest effect on vapor pressure. As temperature increases, vapor pressure increases. As temperature decreases, vapor pressure decreases. This makes sense, as imparting thermal energy gives molecules more kinetic energy. T...
The vapor pressure of water depends on its temperature. The vapor pressure of water at room temperature (25 °C) is 23.8 mm Hg, 0.0313 atm, or 23.8 torr, or 3.17 kPa. At its freezing point (0 °C), the vapor pressure of water is 4.6 torr. At its boiling point (100 °C), the vapor pressure of water is 658.0 torr (atmospheric pressure).
There are several vapor pressure formulas, but two common ones are Raoult’s law and the Clausius-Clapeyron equation.
Perry, R.H.; Green, D.W., eds. (1997). Perry’s Chemical Engineers’ Handbook(7th ed.). McGraw-Hill. ISBN 978-0-07-049841-9.Petrucci, Ralph H.; Harwood, William S.; Herring, F. Geoffrey (2002). General Chemistry(8th ed.). Prentice Hall. ISBN 978-0-13-014329-7.Sinnot, R.K. (2005). Chemical Engineering Design(4th ed.). Butterworth-Heinemann. ISBN 978-0-7506-6538-4.Wagner, W. (1973). “New vapour pressure measurements for argon and nitrogen and a new method for establishing rational vapour pressure equations”. Cryogenics. 13 (8): 470–482. doi:10.1016/0011-2275...The vapor pressure of water is the pressure exerted by molecules of water vapor in gaseous form (whether pure or in a mixture with other gases such as air). The saturation vapor pressure is the pressure at which water vapor is in thermodynamic equilibrium with its condensed state.
Sep 17, 2024 · Water vapor is the gaseous form of water, a crucial molecular compound in the study of chemistry. It’s like the invisible steam that rises from a hot cup of tea. Even though we can’t always see it, water vapor is everywhere in the air around us, especially when it’s warm or humid.
- 7732-18-5
- 962
- InChI=1/H2O/h1H2
- 24.9M
Vapor pressure[a] or equilibrium vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. The equilibrium vapor pressure is an indication of a liquid's thermodynamic tendency to evaporate.
Apr 12, 2023 · At a pressure greater than 1 atm, water boils at a temperature greater than 100°C because the increased pressure forces vapor molecules above the surface to condense. Hence the molecules must have greater kinetic energy to escape from the surface.
