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 assumption.
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 pressure equals the …
physical chemistry - What is the differences between partial pressure ...
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 in a …
thermodynamics - Why do we have water vapor at room temperature …
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 reached in a …
General rules for deciding volatility - Chemistry Stack Exchange
May 2, 2012 · In chemistry and physics, volatility is the tendency of a substance to vaporize. Volatility is directly related to a substance's vapor pressure. At a given temperature, a substance with higher …
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 open …
evaporation - What is the difference between "smell/odor" and "vapor ...
Nov 30, 2022 · What is the difference between "smell/odor" and "vapor" of a substance? It is assumed that the vapor of a given compound/element is the gas phase of the same pure compound/element.
Why is the relationship between vapour pressure and boiling point of ...
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 point is, amount of …
gas laws - Why can air accommodate more water when the air has a …
The liquid-vapor coexistence line of the phase diagram of water has a positive slope $\mathrm {d}P/\mathrm {d}T$. Humidity in air is a partial pressure of water vapor. If partial pressure of water is …
Why does the vapour pressure not depend on the surface area and …
Apr 10, 2023 · I think that you forget about molecules re-entering the liquid from the vapour. Eventually the vapour will come into equilibrium with its liquid and so the rate of leaving the liquid and the rate of …