What is the difference between vapour and gas? 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
General rules for deciding volatility - Chemistry Stack Exchange 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 vapor pressure vaporizes more readily than a substance with a lower vapor pressure (Taken from Wikipedia) But this doesn't seem to work--I recall that methanol is less volatile than ethanol I think you
thermodynamics - Why do we have water vapor at room temperature and . . . 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 closed system The molecules in vapor form create a specific vapor pressure at a given temperature, as explained by the kinetic theory of gases
physical chemistry - Why is octane more volatile than water while . . . 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 atmospheric pressure" Volatile substances have higher saturated vapor pressure at a given temperature, than the lesser volatile substances
Why vapor pressure is unaffected by change in atmospheric pressure 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 container while discussing boiling?