VOLUMETRIC PROPERTIES OF CYCLIC HYDROCARBONS IN TETRACHLOROMETHANE AT 25-DEGREES-C

By means of a vibrating-tube densimeter, the densities at 25-degrees-C have been determined for binary mixtures of tetrachloromethane with a liquid (cyclodecane, cis-decahydronaphthalene, trans-decahydronaphthalene, bicyclohexyl, pentane) or a solid hydrocarbon (cyclododecane, cyclo-pentadecane, norbornane, adamantane, octahydro-4,7-methano-1H-indene). Excess molar volumes have been obtained in the whole mole fraction range for mixtures containing a liquid hydrocarbon. For solid cycloalkanes, apparent molar volumes have been evaluated in the whole range of miscibility. The partial molar volumes at infinite dilution VBAR-degrees have been calculated for all examined cycloalkanes and compared with those of n-alkanes. The dependence of VBAR-degrees upon the size and shape of the ring or cage structure of the solute is discussed. The capability of the Flory theory to reproduce V(E) for these mixtures is also tested.