VOLUMETRIC PROPERTIES OF BINARY-MIXTURES OF WATER WITH METHOXY(ETHOXY)(N) ETHANOLS

被引:60
作者
DOUHERET, G
LAJOIE, P
DAVIS, MI
RATLIFF, JL
ULLOA, J
HOILAND, H
机构
[1] UNIV TEXAS,DEPT CHEM,EL PASO,TX 79968
[2] UNIV BERGEN,DEPT CHEM,N-5007 BERGEN,NORWAY
来源
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1995年 / 91卷 / 15期
关键词
D O I
10.1039/ft9959102291
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Density and ultrasonic speed measurements have been made, respectively, by means of a densimeter operating in a flow mode and by a sonic solution monitor using a 'sing-around' technique, for aqueous mixtures of 2-(2-methoxyethoxy)ethanol and 2-[2-methoxy(ethoxy)(2)]ethanol, at 298.15 K, across the entire composition range. The density values were readily converted to molar volumes, V-E and excess molar volumes, V-E. Estimates of the isentropic molar quantity, K-S, equal to -(partial derivative V/partial derivative p)(S), and of its excess counterpart, K-S(E), have been obtained from the density values, in combination with the ultrasonic speed values. The magnitude of V-E increases with the introduction of oxyethylene groups into the molecule of amphiphile. The composition dependence of K-S(E) shows a similar increase, but one that is limited to the water-rich region. Data reduction procedures have been used to calculate several related quantities leading to graphs with enhanced visual impact. Our results have been compared with those reported earlier for methanol-water, and 2-methoxyethanol-water. Graphical analyses of the data sets are presented in an effort to find a plausible rationale for the observed trends in terms of prevailing patterns of molecular aggregation, while the various excess quantities considered are analysed using a segmented-composition model.
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收藏
页码:2291 / 2298
页数:8
相关论文
共 31 条
[1]   EVALUATION OF EXCESS ISENTROPIC COMPRESSIBILITIES AND ISOCHORIC HEAT-CAPACITIES [J].
BENSON, GC ;
KIYOHARA, O .
JOURNAL OF CHEMICAL THERMODYNAMICS, 1979, 11 (11) :1061-1064
[2]   THERMODYNAMICS OF AQUEOUS MIXTURES OF NON-ELECTROLYTES .1. EXCESS VOLUMES OF WATER-N-ALCOHOL MIXTURES AT SEVERAL TEMPERATURES [J].
BENSON, GC ;
KIYOHARA, O .
JOURNAL OF SOLUTION CHEMISTRY, 1980, 9 (10) :791-804
[3]   ISENTROPIC PRESSURE DERIVATIVE OF THE EXCESS PARTIAL MOLAR VOLUME OF A MIXTURE [J].
BENSON, GC ;
KUMARAN, MK .
JOURNAL OF CHEMICAL THERMODYNAMICS, 1983, 15 (08) :799-800
[4]  
COBOS JC, 1987, THESIS U VALLADOLID, V2, P419
[5]   THERMODYNAMIC AND RELATED STUDIES OF AMPHIPHILE PLUS WATER-SYSTEMS [J].
DAVIS, MI .
CHEMICAL SOCIETY REVIEWS, 1993, 22 (02) :127-134
[6]   PATTERNS OF MOLECULAR AGGREGATION IN AQUEOUS MIXTURES OF SPECIES OF THE TYPE-CME2M+1.(OC2H4)N.OH .1. APPLICATIONS OF AN EMPIRICAL-MODEL TO SOME CME0 PLUS WATER-SYSTEMS [J].
DAVIS, MI ;
DOUHERET, G .
THERMOCHIMICA ACTA, 1991, 188 (02) :229-247
[7]   A 4 SEGMENT COMPOSITION MODEL FOR NON-ELECTROLYTE AQUEOUS MIXTURES [J].
DAVIS, MI .
THERMOCHIMICA ACTA, 1984, 77 (1-3) :421-437
[8]   PARTIAL EXCESS MOLAR PROPERTIES OF WATER IN AMPHIPHILE PLUS WATER-SYSTEMS [J].
DAVIS, MI .
THERMOCHIMICA ACTA, 1992, 200 :15-31
[9]  
De Giorgio V., 1985, PHYSICS AMPHIPHILES, P303
[10]   SPEED OF SOUND IN PURE WATER [J].
DELGROSS.VA ;
MADER, CW .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1972, 52 (05) :1442-&