SPEEDS OF SOUND IN AND ISENTROPIC COMPRESSIBILITIES OF (1,1,2,2,-TETRACHLOROETHANE PLUS ANISOLE, 1,4-DIOXANE, METHYLETHYLKETONE, AND PYRIDINE) AT T=303.15 K
J. Nath, SPEEDS OF SOUND IN AND ISENTROPIC COMPRESSIBILITIES OF (1,1,2,2,-TETRACHLOROETHANE PLUS ANISOLE, 1,4-DIOXANE, METHYLETHYLKETONE, AND PYRIDINE) AT T=303.15 K, Journal of Chemical Thermodynamics, 28(10), 1996, pp. 1083-1092
Measurements of speeds of sound u have been made in binary mixtures of
1,1,2,2-tetrachlorethane (CHCl2CHCl2) with anisole (C6H5OCH3), 1,4-di
oxane (C4H8O2), methylethylketone (CH3COC2H5), and pyridine (C5H5N) at
T = 303.15 K. Values of u have been used to calculate the apparent ex
cess speeds of sound Delta u and the isentropic compressibilities K-S
for these mixtures. The excess isentropic compressibilities K-S(E) hav
e also been calculated from the values of K-S. The K-S(E) have been fo
und to be highly negative for {xCHCl(2)CHCl(2) + (1 - x)CH3COC2H5}, an
d very slightly negative for {xCHCl(2)CHCl(2) + (1 - X)C4H8O2}. The K-
S(E) is very slightly negative at low x, and very slightly positive at
higher x for {xCHCl(2)CHCl(2) + (1 - x)C6H5OCH3}. The K-S(E) is also
very slightly negative for {xCHCl(2)CHCl(2) + (1 - x)C5H5N} at low x a
nd, compared with {xCHCl(2)CHCl(2) + (1 - x)C6H5OCH3}, the K-S(E) is m
ore positive for {xCHCl(2)CHCl(2) + (1 - x)C5H5N} at higher x. Values
of K-S(E) for the various systems have been discussed in the light of
interactions between the components. (C) 1996 Academic Press Limited