Specific Volume of Boiling Liquid

[Ali Asadullah]

Why the specific volume of a liquid decreases with the increase in pressure at saturation temperature and why the specific volumes of vapor at saturation temperature decreases with increasing pressure??

 

[Astronuc]

Liquids are less compressible than gases. Liquid density decreases (specific volume increases) with temperature (thermal expansion), which is related to atomic vibration (and reduced interatomic/intermolecular forces). Gases are simply compressed as pressure increases, so specific volume decreases (density increases) as gas is compressed.

Similarly in solids, as temperature increases, yield strength and ultimate tensile strength decrease, and Young's modulus decreases. Thermal expansion and lattice parameter increase with temperature.

http://www.engineeringtoolbox.com/young-modulus-d_773.html

 

[Ali Asadullah]

My dear please explain the part about liquids.
Thank You