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- DictionaryVa·por pres·sure/ˈvāpər ˈpreSHər/
noun
- 1. the pressure of a vapor in contact with its liquid or solid form.
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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 24, 2021 · Vapor pressure (or vapour pressure) is the equilibrium pressure of a vapor above its liquid or solid state in a closed container. In this type of closed system, some molecules of a liquid or solid have enough kinetic energy to escape at the surface and enter the vapor (gas) phase.
Jul 18, 2024 · Vapour pressure, pressure exerted by a vapour when the vapour is in equilibrium with the liquid or solid form, or both, of the same substance—i.e., when conditions are such that the substance can exist in both or in all three phases. Learn more about vapour pressure in this article.
Jan 30, 2023 · The vapor pressure of a substance is the pressure that the gaseous part of the substance exerts on the container of said substance. Boiling a elevated altitudes. The fact that the vapor pressure is equal to the external pressure can become important when talking about boiling temperatures at various altitudes.
The vapor pressure of a liquid is the equilibrium pressure of a vapor above its liquid (or solid); that is, the pressure of the vapor resulting from evaporation of a liquid (or solid) above a sample of the liquid (or solid) in a closed container.
Sep 21, 2022 · The vapor pressure is a measure of the pressure (force per unit area) exerted by a gas above a liquid in a sealed container. Vapor pressure is a property of a liquid based on the strength of its intermolecular forces.
Jun 16, 2023 · Define vapor pressure Whenever we have a liquid with some space above it, some of the molecules on the surface of the liquid might escape into the space and become gaseous if they have enough kinetic energy.
The meaning of VAPOR PRESSURE is the pressure exerted by a vapor that is in equilibrium with its solid or liquid form —called also vapor tension.
The vapor pressure is the pressure at which the rate of vaporization and condensation is equal (i.e. in equilibrium). Some molecules may have a particular tendency to vaporize due to, for example, weak inter-molecular forces and high kinetic energy.
Vapor pressure is defined as the partial pressure of a vapor in dynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. To understand vapor pressure, we must get familiar with the concept of dynamic equilibrium .
