Preferred Label : excess volume (at a solid/liquid interface);
IUPAC definition : For a pure liquid, despite its low compressibility, the variation of density near
a solid surface can be detected and measured. The total volume V of a system consisting
of solid and pure liquid is different from (usually less than) that calculated assuming
a constant liquid density. If the densities of bulk solid (ρ sol) and liquid (ρ l)
are known then an excess volume (usually negative) can be defined as: \[V {σ } V-
V {\mathrm{sol}}- V {\,\unicode{x26ac}} V- \frac{m {\mathrm{sol}}}{\rho {\mathrm{sol}}}-
\frac{m {{l}}}{\rho {{l}}}\] where m sol is the mass of solid, V sol its volume calculated
from the bulk density, V is the initial volume of liquid and m l is the mass of liquid.
The excess mass is given by: \[m {σ } m {{l}}- (V- V {\mathrm{sol}})\ \rho {{l}}\];
Origin ID : E02237;
See also
For a pure liquid, despite its low compressibility, the variation of density near
a solid surface can be detected and measured. The total volume V of a system consisting
of solid and pure liquid is different from (usually less than) that calculated assuming
a constant liquid density. If the densities of bulk solid (ρ sol) and liquid (ρ l)
are known then an excess volume (usually negative) can be defined as: \[V {σ } V-
V {\mathrm{sol}}- V {\,\unicode{x26ac}} V- \frac{m {\mathrm{sol}}}{\rho {\mathrm{sol}}}-
\frac{m {{l}}}{\rho {{l}}}\] where m sol is the mass of solid, V sol its volume calculated
from the bulk density, V is the initial volume of liquid and m l is the mass of liquid.
The excess mass is given by: \[m {σ } m {{l}}- (V- V {\mathrm{sol}})\ \rho {{l}}\]
