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 The origin of vapor is presumably Latin with earlier roots in Ancient Greek The origin of the word gas appears to be the Greek word chaos by way of Dutch:
physical chemistry - What is the differences between partial pressure . . . The partial pressure of a gas is the pressure exerted by a gas in the volume occupied by a mixture of gases, while the vapor pressure of a gas is the pressure exerted by a gas over its condensed phase Although : The vapor pressure that a single component in a mixture contributes to the total pressure in the system is called partial pressure
evaporation - What is the difference between smell odor and vapor . . . 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 By condensing the vapor, you can obtain the same stuff in liquid or solid form Smell on the other hand is a human animal perception
physical chemistry - Relationship between vapour pressure and saturated . . . The air water are at STP and are at equilibrium So the total pressure of the gas phase (water + dry air) is 760 torr 742 torr is dry air and 18 torr is the partial vapor pressure of water The air water mixture has 100% humidity which means that it is saturated with water, hence the term saturated vapor pressure (In other words if the
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)
thermodynamics - Why do we have water vapor at room temperature and . . . If vapor partial pressure is higher that (saturated) vapor pressure 0 02 atm, vapor condenses If lower, water evaporates If it happened there was 1 atm of vapor at 25 deg C, it would condense until it reaches p-T curve The total pressure 1 atm is relevant only for the boiling point, when vapor pressure equals total pressure $\endgroup$
how to determine the volatility of an organic compound using the . . . Vapor pressure is the physical property that expresses a compound's volatility at a given temperature, and the enthalpy of vaporization describes the temperature dependence of the vapor pressure For some compounds, like water, there are tables and formulae readily available for determining the vapor pressure at different temperatures
vapor pressure - What is the difference between volatility and . . . A measure of volatility is the vapor pressure There is a very related term partial pressure So if we think of air as being nitrogen and oxygen, then there is a partial pressure for nitrogen and a partial pressure for oxygen, and the sum of the two partial pressure is the actual pressure (the absolute pressure)
organic chemistry - What is the difference, if there is, between this . . . Reading about water vapor distillation, I found two different approaches: Direct; Indirect; The direct approach has an arrangement like this: Here the chamber contains the water and the plant It is cooled and as the water vapor flows away it carries the low volatile compound vapor of the plant vegetable Both condense and the oils can be obtained
What is the condensation point of water? - Chemistry Stack Exchange The boiling point of water is $\pu{100^\circ C}$ However, we find that even at room temperature, water can evaporate into gas Therefore, water vapor can exist at temperatures of, say, $\pu{50^\circ C}$ At what temperature, can you say for certain that all water vapor will turn into liquid? In other words, what is the condensation point of water?