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在 2 98 15K下用振动管密度计在全浓度范围内测量了四氢呋喃分别与邻二甲苯、间二甲苯、对二甲苯和乙苯构成二元混合物的过量摩尔体积VE。这 4个二元混合物的过量体积VE 值均为负值 ,大小顺序为 :间二甲苯 >乙苯 >邻二甲苯 >对二甲苯
The excess molar volume VE of tetrahydrofuran in binary mixtures with o-xylene, m-xylene, p-xylene and ethylbenzene, respectively, was measured over a range of concentrations using a vibrating tube densitometer at 2 98 15K. The excess VE values of the four binary mixtures were all negative with the order of m-xylene> ethylbenzene> o-xylene> p-xylene