Excess volumes of cyclohexane + a linear ether at 298.15 K

摘要: Abstract By means of a vibrating tube densimeter, the molar excess volumes, V E , at 298.15 K, have been determined in whole mole fraction range, for binary mixtures cyclohexane with linear mono-, di-, or triether (diethyl, dipropyl, dibutyl, methyl butyl, ethyl butyl ethers, dimethoxymethane, diethoxymethane, 1,2-dimethoxyethane, 1,2-diethoxyethane, diethylene glycol dimethyl ether). Also, limiting partial molal volumes evaluated from high dilution data. The values are positive all systems and increase increasing number oxygen atoms ether molecule. There is clear evidence effect of: (i) chain lengthening; (ii) position -O- group structure monoethers; (iii) distance two diethers. Flory theory nonpolar solutions has applied to some present mixtures. sign, magnitude, trend correctly predicted.