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What statement best describes liquid water and water vapor at equilibrium?
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Is liquid water a water vapor?
No: Vapor is defined as the gas phase of a substance that is mostly solid or liquid at equilibrium at standard temperature and pressure. Therefore, a liquid itself is never a vapor, but the liquid is in equilibrium with a vapor phase that contains the same chemical substance.
What is the relationship between the rate of evaporation and the rate of condensation of the vapor of a liquid in a closed container and has a constant vapor pressure?
In a system at constant vapor pressure, a dynamic equilibrium exists between the vapor and the liquid. The system is in equilibrium because the rate of evaporation of liquid equals the rate of condensation of vapor. -KarkatHorns
What is latent heat of sublimation?
When a substance is below the triple point, the equilibrium will be between solid and vapor rather than solid/liquid or liquid/vapor. Sublimation is the direct change from solid to vapor without any intermediate phase change. The latent heat of sublimation is the energy required to change a given quantity of solid into the vapor at equilibrium. It is analogous to (but not the same as) latent heat of melting (energy required to melt the solid to liquid) and latent heat of vaporization (energy required to change a liquid into a gas).
What is the difference between vapors and gas?
Strictly speaking, the terms "gas" and "vapor" are synonymous. The term "vapor" is often used to refer to the gaseous phase of something that may also exist as a liquid in equilibrium with the vapor or at a condition not too far removed from the observed condition of the vapor. In this context one might differentiate between a "vapor" and a "gas" by saying that a vapor is a saturated gas. Vapor is also sometimes used to refer to liquid droplets or particulates small enough to remain suspended in the air such as a mist, cloud, or fumes.
What happens to a liquid-vapor system at equilibrium if the temperature decreases?
If the temperature of a liquid decreases, so does the vapor pressure. Clothes dry faster in a warm or hot clothes dryer than they do when hung up in a cool house. The vapor pressure of water is higher when it is warmer in the clothes dryer. Clothes dry faster in the sunshine than in the shade. Sunshine is warmer.
Is liquid water a water vapor?
No: Vapor is defined as the gas phase of a substance that is mostly solid or liquid at equilibrium at standard temperature and pressure. Therefore, a liquid itself is never a vapor, but the liquid is in equilibrium with a vapor phase that contains the same chemical substance.
What is the relationship between the rate of evaporation and the rate of condensation of the vapor of a liquid in a closed container and has a constant vapor pressure?
In a system at constant vapor pressure, a dynamic equilibrium exists between the vapor and the liquid. The system is in equilibrium because the rate of evaporation of liquid equals the rate of condensation of vapor. -KarkatHorns
What has the author John Warren Macan written?
John Warren Macan has written: 'Computer evaluation of binary vapor-liquid equilibrium data' -- subject(s): Vapor-liquid equilibrium
When is water in equilibrium with water vapor?
When the concentration of the liquid (water) and gas (vapor) phases do not change.
Vapor pressure is measured when a liquid and its vapor are?
The pressure exerted by the gas in equilibrium with a solid or liquid in a closed container at a given temperature is called the vapor pressure
What is the gas pressure above a liquid at equilibrium called?
Vapor pressure
What is equilibrium vapor pressure?
It is vapor molecules in equilibrium with a liquid in a closed system exert a pressure proportional to the concentration of molecules in the vapor state.
What has the author H Knapp written?
H. Knapp has written: 'Solid-liquid equilibrium data collection' -- subject(s): Binary systems (Metallurgy), Phase rule and equilibrium, Solid-liquid equilibrium, Tables, Vapor-liquid equilibrium
What is kinetic vapour pressure?
Kinetic vapor pressure which is defined as the pressure exerted when a solid or liquid is at equilibrium with its own vapor.
What is mean saturated liquid and vapor?
A liquid or vapor is saturated when it is at the temperature and pressure where it would be in equilibrium with the other phase; saturated liquid at the boiling point or saturated vapor at the dew point. If the pressure is raised, the vapor will condense until the pressure is restored to the original pressure or all the vapor is condensed. If the pressure is dropped, a saturated liquid will boil until the pressure rises back to the original pressure or all the liquid has vaporized. If the temperature is increased, a saturated liquid will boil off completely unless the vaporized liquid raises the pressure enough to establish a new equilibrium. If the temperature is dropped, a saturated vapor will condense until the pressure has dropped enough to establish a new equilibrium.
What has the author Aage Fredenslund written?
Aage Fredenslund has written: 'Vapor-liquid equilibria using UNIFAC' -- subject(s): Data processing, UNIFAC, Vapor-liquid equilibrium
What is mean by saturated liquid and vapor?
Any addition of thermal energy to a saturated liquid will cause it to vaporize. Any subtraction of thermal energy from a saturated vapor will cause it to condense.
