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- 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 - Relationship between vapour pressure and saturated . . .
I need clarity on saturated vapour pressure in a closed system at equilibrium How does saturated vapour pressure relate to vapour 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
- 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
- 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
- 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)
- thermodynamics - Why do liquids vaporise spontaneously at temperatures . . .
the ∆G is zero at its boiling point (the thermodynamic definition of boiling point), and becomes positive at temperatures below the boiling point However every liquid has a characteristic vapour pressure at all temperatures How does this happen even though the ∆G has become positive thus the reaction has lost spontaneity?
- What is the differences between partial pressure and vapour pressure?
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 closed system
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