Excess Molar Volumes and Kinematic Viscosities of Binary Liquid Mixtures of Cyclohexanone + Dichloromethane, + Trichloromethane, + 1,2-Dichloroethane, + Trichloroethene, + 1,1,1-Trichloroethane, and + Cyclohexane

Abstract

Excess molar volumes, , at T = 298.15 K, and kinematic viscosities, ν, at T = 303.15 K, have been measured for binary liquid mixtures of cyclohexanone (C6H10O) + dichloromethane (CH2Cl2), + trichloromethane (CHCl3), + l,2-dichloroethane (CH2ClCH2Cl), + trichloroethene (CHClCCl2), + 1,1,1-trichloroethane (CCl3CH3), and + cyclohexane (c-C6H12). The values of ν and have been fitted in appropriate equations using a least-squares method. has been found to be negative throughout the entire range of composition for mixtures of C6H10O + CH2Cl2, + CHCl3, + CHClCCl2, and + CCl3CH3, and positive for C6H10O + c-C6H1 2. For C6H10O + CH2ClCH2Cl, has been found to be positive at lower mole fractions of C6H10O, and negative at higher mole fractions. The analysis has shown that McAllister's approach correlates ν of the present mixtures throughout the entire composition range to a significantly high degree of accuracy.

Excess molar volumes, speeds of sound and isentropic compressibilities of (1,4-dioxane + trichloromethane, or tetrachloromethane, or 1,1,2,2-tetrachloroethane, or 1,1,1-trichloroethane) atT = 293.15

“…The excess molar volumes V E m were measured with an uncertainty of the order of ±2.10 −3 cm 3 · mol −1 , using a two-limbed Pyrex glass dilatometer which was similar to that used by Nath and Pandey, (10) and Nath and Mishra. (11) Known amounts of the two liquids were confined over mercury in the absence of air spaces in the two limbs of the dilatometer, which was mounted on a stand and immersed in thermostatted water (controlled to ±0.01 K). The mixing of the two liquids was achieved by rocking the cell back and forth through a definite angle, and the mercury levels in the capillary of the dilatometer were noted using a cathetometer that had a resolution of ±1.10 −3 cm.…”

Speeds of sound and isentropic compressibilities of (cyclohexanone + dichloromethane, or trichloromethane, or trichloroethene, or 1,2-dichloroethane) atT= 303.15 K

“…For {xC 6 H 10 O + (1 − x)CH 2 ClCH 2 Cl}, κ E S is slightly positive at low x, and slightly negative at high x, with an inversion of the sign occurring at x ≈ 0.24. It should be pointed out that the values of V E m have also been found (1,3) to be negative for {xC 6 H 10 O + (1 − x)CHCl 3 } and {xC 6 H 10 O + (1 − x)CHClCCl 2 } at T = 298.15 K and T = 308.15 K, and for {xC 6 H 10 O + (1 − x)CH 2 Cl 2 } at T = 298.15 K and T = 303.15 K. It has also been found (1,3) that the values of V E m for {xC 6 H 10 O + (1 − x)CH 2 ClCH 2 Cl} are positive at low values of x and negative at high values of x at T = 298.15 K and T = 308.15 K. At x = 0.5, κ E S for the various mixtures has the sequence:…”

“…(1,3) In equation (4) (4) were used to obtain V id m . The values of V * m,i of CHCl 3 and C 6 H 10 O reported previously (2) are 81.177 cm 3 · mol −1 and 104.680 cm 3 · mol −1 , respectively.…”

“…(1,2) The densities ρ * of the liquid samples of CH 2 Cl 2 , CHCl 3 , CH 2 ClCH 2 Cl, CHClCCl 2 , and C 6 H 10 O used for the analysis of the present u data were measured recently. (2,4) The speeds of sound u in pure liquids and binary mixtures were measured at T = (303.15 ± 0.01) K and at a frequency of 3 MHz with a quartz-crystal interferometer in the same manner as described previously.…”

“…Binary mixtures of this kind are of particular interest from the viewpoint of the existence of an electron donor-acceptor interaction leading to the formation of intermolecular adducts between the components in the liquid state. In a previous paper (1) excess molar volumes V E m at T = 298.15 K, and kinematic viscosities ν at T = 303.15 K have been reported for binary liquid mixtures of cyclohexanone (C 6 H 10 O) and dichloromethane (CH 2 Cl 2 ), or trichloromethane (CHCl 3 ), or 1-2-dichloroethane (CH 2 ClCH 2 Cl), or trichloroethene (CHClCCl 2 ), or 1,1,1-trichloroethane (CCl 3 CH 3 ), or cyclohexane (c-C 6 H 12 …”