EXCESS MOLAR VOLUMES OF (CYCLOHEXANONE PLUS TRICHLOROMETHANE, OR 1,2-DICHLOROETHANE, OR TRICHLOROETHENE, OR 1,1,1-TRICHLOROETHANE, OR CYCLOHEXANE) AT T = 308.15 K, AND OF (CYCLOHEXANONE PLUS DICHLOROMETHANE) AT T = 303.15 K
J. Nath et Sk. Mishra, EXCESS MOLAR VOLUMES OF (CYCLOHEXANONE PLUS TRICHLOROMETHANE, OR 1,2-DICHLOROETHANE, OR TRICHLOROETHENE, OR 1,1,1-TRICHLOROETHANE, OR CYCLOHEXANE) AT T = 308.15 K, AND OF (CYCLOHEXANONE PLUS DICHLOROMETHANE) AT T = 303.15 K, Fluid phase equilibria, 152(2), 1998, pp. 277-282
Excess molar volumes V-m(E) have been measured using a dilatometric te
chnique for mixtures of cyclohexanone (C6H10O) with trichloromethane (
CHCl3), 1,2-dichloroethane (CH2ClCH2Cl), trichloroethene (CHClCCl2), 1
,1,1-trichloroethane (CCl3CH3), and cyclohexane (c-C6H12) at T= 308.15
K, and for cyclohexanone + dichloromethane (CH2Cl2) at T= 303.15 K. T
hroughout the entire range of the mole fraction chi of C6H10O, V-m(E)
has been found to be positive for chi C6H10O + (1 - chi)c-C6H12, and n
egative for chi C6H10O + (1- chi)CH2Cl2, chi C6H10O +(1 -chi)CHClCCl2,
chi C6H10O +(1 -chi)CHCl3, and chi C6H10O +(1 -chi) CCl3CH3. For chi
C6H10O + (1 - chi)CH2ClCH2Cl, V-m(E) has been found to be positive at
lower values of chi and negative at high values of chi, with inversion
of sign from positive to negative values of V-m(E) for this system oc
curring at chi similar to 0.78. Values of V-m(E) for the various syste
ms have been fitted by the method of least squares with smoothing equa
tion, and have been discussed from the viewpoint of the existence spec
ific interactions between the components. (C) 1998 Elsevier Science B.
V. All rights reserved.