Specific volume

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Physical size
Surname (Mass) specific volume
Formula symbol
Size and
unit system
unit dimension
SI m 3 · kg -1 L 3 · M −1
See also: density , density (specific gravity), relative density (specific gravity)

The (mass) specific volume ( symbol ) is defined as the reciprocal of the density :

The specific volume is the ratio of volume to mass , i.e. the volume of the unit of mass .

This intensive state variable is used in the thermodynamics of gases and vapors and in polymer analysis , in particular for creating state diagrams (example: p - v diagram ).

In meteorology , the symbol α denotes the specific volume of air.

Mole specific volume

If the volume is instead normalized to the amount of substance n , the molar volume is obtained , which is also a specific volume:

conversion

From the above Definitions and the molar mass follows:

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