密度法测定了298.15K下乙醇、环己烷、三氯甲烷、甲苯、丙酮、四氯化碳、乙腈、二甲基甲酰胺、二甲基亚砜在甲醇或苯及两者混合物中的无限稀释偏摩尔体积.密度测定所用溶液中溶质的浓度范围是0.2一1.5m;甲醇和苯混合物是全组成比范围.溶质偏摩尔体积随甲醇-苯组成比的变化趋势反映了几种分子间相互作用结果即三种分子间物理型分子间相互作用;溶质与甲醇分子氢键缔合相互作用;溶质同甲醇或苯的弱络合作用。 Density was measured at 298.15K for ethanol, cyclohexane, chloroform, toluene, acetone, carbon tetrachloride, acetonitrile, dimethylformamide, dimethyl sulfoxide in methanol or benzene and mixtures of both The concentration of solute in the solution used for the determination of density is 0.2 to 1.5 m and the mixture of methanol and benzene is in the range of the whole composition.The trend of the partial molar volume of solute with the methanol-benzene composition ratio reflects the interaction between several kinds of molecules The result is the intermolecular physical interaction among three molecules; the interaction of solute with hydrogen bond of methanol molecule; the weak complexation of solute with methanol or benzene.