【Daily Question】Deep Processing 20160710: What is saturated vapor pressure?
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To boost popularity and enhance technical exchanges among sea enthusiasts, we are starting to publish [Question of the Day] from today. Participation earns 4 points of wealth! 10 wealth points as a reward for correct answers or in-depth discussions! :lol Question: What is “saturation vapor pressure”? :o Answer: The gas at the gas-liquid equilibrium state is called saturated vapor, and the pressure it has at this point is known as the saturated vapor pressure. ================================ Promotion of petrochemical activities: ☛Notice on the launch of the large-scale event “I’m saving energy – where are you?” in the petrochemical area: http://bbs.hcbbs.com/thread-1579199-1-1.html (Source: Haichuan Chemical Industry Forum). This event offers awards in both text and image categories. When there are over 200 entries, an additional grand prize will be awarded, worth 600 Haichuan coins; if there are more than 300 entries, the grand prize value increases to 1,000 Haichuan coins, and for 500 entries it rises to 1,500 Haichuan coins. First prize: 3 Haichuan commemorative water cups; second prize: 5 winners, each receiving 120 Haichuan coins; excellence awards: several winners, each receiving 200 Haichuan coins. --------------------------------------------------------------- ☛“My facility, my home” – Photo competition (10 Haichuan coins per photo): http://bbs.hcbbs.com/thread-1495069-1-1.html (Source: Haichuan Chemical Industry Forum)
#Here’s a quick reply: #Under sealed conditions, at a certain temperature, the pressure of vapor that is in phase equilibrium with a solid or liquid is called the saturated vapor pressure.
Latent heat is utilized; it contains much more energy than sensible heat. Moreover, the high temperature of the superheated steam can cause changes in the physical properties of the material
In any liquid, the molecules on its surface have a tendency to break away from the surface and move into space, a process known as vaporization. At the same time, the spatial gas molecules generated also have a tendency to form a liquid due to their continuous movement, that is, liquefaction. Vaporization and liquefaction are two opposite processes that occur simultaneously. At a certain temperature, when the number of molecules that move into space equals the number of molecules that form the liquid, that is, when the relative amounts of vapor and liquid no longer change, a dynamic equilibrium is established between the vapor and the liquid. At this point, the vapor pressure above the liquid is the saturated vapor pressure of that liquid at that temperature.
At a certain temperature, the pressure exerted by the vapor when the liquid is in equilibrium with its vapor above the surface is called the saturated vapor pressure, or simply vapor pressure
The pressure generated by the vapor formed when a liquid evaporates at a certain temperature is the saturated vapor pressure of that liquid at that temperature
The pressure exerted by steam, liquid, and solid in a state of phase equilibrium within a confined space
The pressure of a vapor that is in phase equilibrium with a solid or liquid at a certain temperature under sealed conditions is called the saturated vapor pressure.
Vapor pressure refers to the pressure exerted on the surface of a liquid (or solid) by the vapor of that substance present at its surface; this pressure is known as the vapor pressure of the liquid.