PARTIAL MOLAL VOLUMES OF SOME NONPOLAR AND POLAR SOLUTES IN BENZENE, METHANOL AND THEIR MIXTURES AT 298.15K

Partial molal volumes of ethanol, cyclohaxane, trichloromethane, toluene, acetone, carbua Let biocide, acetonitrile, DMF, and DMSO in methanol, benzene, and their mixtures at infinite dilution at 298.15K were determined with density measurement The concentration of solutes for density measurement is in the range from 0.2 to 1.5 mol . kg(-1) solvent. The compositions of methanol-benzene mixture lay between mole fraction 0 and 1. Variation or salute partial motel volumes with composition of methanol-benzene mixture was attributed to several aspects of molecular interaction, i.e, physical type interaction among three kinds of molecules; hydrogen bond association between solute and methanol molecules, and weak complex between solute and methanol or benzene.