VOLUMES OF MIXING OF ETHERS WITH TETRACHLOROMETHANE AT 298.15-K

The excess molar volumes V(E), at 298.15 K, have been determined by means of a vibrating-tube densimeter in the whole mole fraction range for binary mixtures of tetrachloromethane with an ether (diethyl ether, dimethoxymethane, diethoxymethane, 1,2-dimethoxyethane, 1,2-diethoxyethane, diethyleneglycol dimethyl ether, oxepane or 1,3-dioxolane). The V(E) values are negative for all systems and become less negative with increasing number of oxygen atoms in the ether molecule. The V(E) values of some of the present mixtures have been analyzed in terms of the Flory theory of non-polar solutions. Limiting partial molar volumes V(o)BAR have been evaluated for each component of the examined systems. The behaviour of V(o)BAR of ethers is discussed and a simple group additivity scheme is presented.