What is the difference between "vapour" and "gas"?
Apr 19, 2021 · Vapor implies the existence of a condensed phase that is the source or destination of the gas, or with which the gas may be in equilibrium; while gas does not make such an …
physical chemistry - What is the differences between partial …
Jan 23, 2014 · Vapor pressure 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 …
Why does the pressure sharply increase when the liquid/vapor ...
Oct 2, 2024 · The equilibrium vapor pressure varies with temperature because of two factors - 1)kinetic energy of particles and 2) number density. Both increase non-negligibly with …
physical chemistry - Why is octane more volatile than water while ...
Oct 5, 2023 · 14 Octane has a boiling point of 120 °C. Water has a boiling point of 100 °C. The definition of boiling point is, "the temperature which the liquid substance's saturated vapor …
thermodynamics - Why do we have water vapor at room …
May 6, 2024 · 1 Think of molecules of water liquid escaping into vapor, and molecules of water vapor condensing into liquid. Both processes occur simultaneously, and an equilibrium is …
General rules for deciding volatility - Chemistry Stack Exchange
Volatility is directly related to a substance's vapor pressure. At a given temperature, a substance with higher vapor pressure vaporizes more readily than a substance with a lower vapor pressure.
Vapor Pressure and Boiling Point - Chemistry Stack Exchange
May 16, 2020 · 2 When a substance's multiple phases are in thermodynamic equilibrium with each other the vapor pressure is the pressure exerted by a vapor existing above a liquid …
Why vapor pressure is unaffected by change in atmospheric pressure
Jul 5, 2021 · By definition vapor pressure seems the pressure of vapor ABOVE the liquid which is in equilibrium with liquid and how the hell we are applying the concept of vapor pressure in …
Why is the relationship between vapour pressure and boiling point …
Dec 26, 2023 · 3 If you took out vapor at some moment and if you put it in a container of a fixed volume then its pressure would linearly grow with temperature, as in the Charles' law. The …
thermodynamics - How does water sublimate at normal …
Jan 10, 2022 · The lyophilizer uses the latter approach, constantly pumping the gas phase out so that the partial pressure of water vapor (which in a closed vacuum system rapidly becomes …