简介:Excessmolarvolume(VE)dataonbinaryliquidmixturesofmethylheptenone(MHO)withmethanol,ethanol,n-propanolorn-butanolhavebeendeterminedfromthedensitymeasurementsat298.15Kandatmosphericpressure.ThevaluesofVEinallthesystemsovertheentirecompositionrangearequantifiedbytheRedlich-Kisterequation.TheeffectsofthechainlengthofalkanolsonVEarediscussed.
简介:"Whitepowderytungsticacid"hasbeenusedforpreparingvarioustypesoftungsten-containingcompoundsduetoitshighreactivity.Thepresentpapercoversthestandardmolarenthalpiesofformation,△H0/fofthreetungsten-containingacids.Thevaluesfoundfor"whitepowderytungsticacid"WO3·1.68H2O,"yellowtungsticacid"WO3·1.20H2OanddodecatungstophosphoricacidH3(PW12O40)·25H2Oat298.15Kwere-(1312±1),-(1192±1)and-(18150±13)kJmol-1,respectively.
简介:过量臼齿的卷VmEand运动学的粘性为丙烯乙二醇monomethyl醚(1-methoxy-2-propanol)的二进制混合物作为作文的一个函数被测量了,MeOCH2CH(哦)我,丙烯乙二醇monoethyl醚(1-ethoxy-2-propanol),EtOCH2CH(哦)我,丙烯乙二醇monopropyl醚(1-propoxy-2-propanol),PrOCH2CH(哦)我,丙烯乙二醇monobutyl醚(1-butoxy-2-propanol),BuOCH2CH(哦)我,和丙烯乙二醇tert丁基醚(1-tert-butoxy-2-propanol),t-BuOCH2CH(哦)我与1-butanol臼齿的体积是的过量为系统2-butanol+1-methoxy-2-propanol,和+1-propoxy-2-propanol越过为有1-butanol的所有系统的全部范围ofcomposition否定、积极,为为系统2-butanol+1-ethoxy-2-propanol,和+1-tert-butoxy-2-propanol的系统2-butanol+1-butoxy-2-propanol,和变化符号否定。从试验性的数据,在从xii的动态粘性的偏差被计算了。两过量臼齿的卷和粘性偏差被方法用一个Redlich-Kister类型多项式方程相关为二进制系数和标准错误的评价最少平方。