Excess molar volumes of (cyclohexanone+trichloromethane, or 1,2-dichloroethane, or trichloroethene, or 1,1,1-trichloroethane, or cyclohexane) at T=308.15 K, and of (cyclohexanone+dichloromethane) at T=303.15 K

Excess molar volumes VmE have been measured using a dilatometric technique 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. Throughout the entire range of the mole fraction χ of C6H10O, VmE has been found to be positive for χ C6H10O+(1−χ)c-C6H12, and negative for χ C6H10O+(1−χ)CH2Cl2, χ C6H10O+(1−χ)CHClCCl2, χ C6H10O+(1−χ)CHCl3, and χ C6H10O+(1−χ) CCl3CH3. For χ C6H10O+(1−χ)CH2ClCH2Cl, VmE has been found to be positive at lower values of χ and negative at high values of χ, with inversion of sign from positive to negative values of VmE for this system occurring at χ∼0.78. Values of VmE for the various systems have been fitted by the method of least squares with smoothing equation, and have been discussed from the viewpoint of the existence specific interactions between the components.