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Vapour density

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This is an old revision of this page, as edited by 210.212.165.70 (talk) at 01:25, 25 April 2007 (i have mentioned some important formulas abou vapour density). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Vapour density is the density of a vapour in relation to that of hydrogen.May be defined as mass of a certain volume of a substance divided by mass of same volume of hydrogen.

vapour density= mass of n molecules of gas/ mass of n molecules of hydrogen

by definition molar mass of a gas is the ratio of the mass of one molecule of gas to that of an hydrogen atom under similar conditions

so, vapour density = 1/2 molar mass

See also

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