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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:
- 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
- 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
- How to calculate the vapour density of a mixture?
I have a gaseous mixture of $\\ce{H2}$ and $\\ce{CO2}$ which contains $66\\%$ by mass of $\\ce{CO2}$ I have to figure out the vapour density of the mixture (defined as mass of a certain volume of a
- 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)
- vapor pressure and elevation clarification - Chemistry Stack Exchange
When you go to a higher altitude, the boiling point is lower not because the vapor pressure of the liquid at a given temperature has changed, but because there is less atmospheric pressure The vapor pressure of a liquid at a given temperature is an intrinsic property due to the equilibrium between the liquid and gas phase of that substance
- 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)
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