A relation between excess volume and the form of the dependence of density on composition for binary liquid mixtures

1990 ◽  
Vol 55 (7) ◽  
pp. 1653-1659 ◽  
Author(s):  
Ivan Cibulka

A relation of excess volume and density is analyzed for binary liquid mixtures. It is shown that, unlike the ideal mixture, whose density is a monotonous function of composition, extremes may appear on the density curves of mixtures with non-zero excess volumes. Conditions for the existence of extremes are derived. Some examples are also given and briefly discussed.

1979 ◽  
Vol 57 (15) ◽  
pp. 1915-1918 ◽  
Author(s):  
Abburi Krishnaiah ◽  
Maripuri Sreenivasulu ◽  
Puligundla R. Naidu

Excess volume data for binary liquid mixtures of butylamine with aromatic and aliphatic hydrocarbons were measured as a function of composition dilatometrically at 303.15 and 313.15 K. The hydrocarbons include: benzene, toluene, three isomeric xylenes, hexane, heptane, and octane. The values of VE were found to be positive over the entire range of composition in all the eight systems at both the temperatures. The positive values were ascribed to the break-up of hydrogen bonds in the aggregates of amine by the hydrocarbons.


2019 ◽  
Vol 134 ◽  
pp. 20-30 ◽  
Author(s):  
L.M. Follegatti–Romero ◽  
F.H.B. Sosa ◽  
M.C. Costa ◽  
D.T. Tavares ◽  
L.H. de Oliveira ◽  
...  

1980 ◽  
Vol 33 (11) ◽  
pp. 2543 ◽  
Author(s):  
A Krishnaiah ◽  
DN Rao ◽  
PR Naidu

Excess volumes for binary mixtures of 1-chlorobutane with hexane, heptane, octane and nonane were measured dilatometrically at 303.15 K. Excess volumes are positive over the entire range of composition in the four mixtures. Further, it is observed that increase in chain length increases the magnitude of the excess function.


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