Partial specific volume - Alchetron, the free social encyclopedia

The partial specific volume v i ¯ , express the variation of the extensive volume of a mixture in respect to composition of the masses. It is the partial derivative of volume with respect to the mass of the component of interest.

V = ∑ i = 1 n m i v i ¯ ,

where v i ¯ is the partial specific volume of a component i defined as:

v i ¯ = ( ∂ V ∂ m i ) T , P , n j ≠ i .

The PSV is usually measured in milliLiters (mL) per gram (g).

Properties

The sum of partial specific volumes of a mixture or solution is an inverse of density of the mixture namely the specific volume of the mixture.

v = ∑ i w i ⋅ v i ¯ = 1 ρ ∑ i ρ i ⋅ v i ¯ = 1

References

Partial specific volume Wikipedia

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