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How to calculate the vapour density of a mixture?
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+ Chemistry
+ Mixtures
+ Stoichiometry
Posted by
Monehin Oluwatoyin
How to calculate the vapour density of a mixture?
Was it safe to assume that the amount of substance of mixture equals that of the amount of substance of both the gases?
Amount of substance is additive, just like mass. You have to be careful with volume, though. So yes, it is safe to make that assumption.
I have to figure out the vapour density of the mixture
I'm not sure you are starting with a safe question, i.e. if the vapour density quantity was intended to describe mixtures. Wikipedia has "vapour density = molar mass of gas / molar mass of H2", and I'm not sure whether a mixture has a defined molar mass. The same source states that vapour density is sometimes based on the density of air rather than dihydrogen gas (to assess whether certain gases collect on the floor or ceiling of a room when released).
Was it safe to assume that the amount of substance of mixture equals that of the amount of substance of both the gases?
Amount of substance is additive, just like mass. You have to be careful with volume, though. So yes, it is safe to make that assumption.
I have to figure out the vapour density of the mixture
I'm not sure you are starting with a safe question, i.e. if the vapour density quantity was intended to describe mixtures. Wikipedia has "vapour density = molar mass of gas / molar mass of H2", and I'm not sure whether a mixture has a defined molar mass. The same source states that vapour density is sometimes based on the density of air rather than dihydrogen gas (to assess whether certain gases collect on the floor or ceiling of a room when released).
Amount of substance is additive, just like mass. You have to be careful with volume, though. So yes, it is safe to make that assumption.
I'm not sure you are starting with a safe question, i.e. if the vapour density quantity was intended to describe mixtures. Wikipedia has "vapour density = molar mass of gas / molar mass of H2", and I'm not sure whether a mixture has a defined molar mass. The same source states that vapour density is sometimes based on the density of air rather than dihydrogen gas (to assess whether certain gases collect on the floor or ceiling of a room when released).
Amount of substance is additive, just like mass. You have to be careful with volume, though. So yes, it is safe to make that assumption.
I'm not sure you are starting with a safe question, i.e. if the vapour density quantity was intended to describe mixtures. Wikipedia has "vapour density = molar mass of gas / molar mass of H2", and I'm not sure whether a mixture has a defined molar mass. The same source states that vapour density is sometimes based on the density of air rather than dihydrogen gas (to assess whether certain gases collect on the floor or ceiling of a room when released).
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