Ultrasonic and viscometric studies of molecular interactions in binary mixtures of formamide with ethanol, 1-propanol, 1,2-ethanediol and 1,2-propanediol at different temperatures

被引:79
作者
Nain, Anil Kumar [1 ]
机构
[1] Univ Delhi, Dyal Singh Coll, Dept Chem, New Delhi 110003, India
关键词
ultrasonic speed; viscosity; formamide; alkanols; deviations in isentropic compressibility; molecular interactions;
D O I
10.1016/j.molliq.2008.01.016
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
The ultrasonic speeds, u and viscosities, eta of binary mixtures of formamide (FA) with ethanol, 1-propanol, 1,2-ethanediol, and 1,2-proparrediol, including those of pure liquids, over the entire composition range were measured at 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15 K. From the experimental values of u and eta, the deviations in isentropic compressibility, Delta k(s), in ultrasonic speed, Delta u, and in viscosity, Delta eta were calculated. The variation of these parameters with composition and temperature of the mixtures are discussed in terms of molecular interaction in these mixtures. The observed trends in Delta k(s) values indicate the presence of specific interactions between FA and alkanol molecules. The Delta k(s) values follow the order: ethanol < 1-propanol < 1,2-propanediol < 1,2-ethanediol. It is observed that the Delta k(s) values depend upon the number of hydroxyl groups and alkyl chain length in these alkanol molecules. Furthermore, the free energies, Delta G*, enthalpies, Delta H* and entropies, Delta S* of activation of viscous flow have also been obtained by using Eyring viscosity equation and their dependence on composition of the mixtures have been discussed. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:108 / 116
页数:9
相关论文
共 49 条
[1]   Densities and refractive indices of binary mixtures of benzene with triethylamine and tributylamine at different temperatures [J].
Ali, A. ;
Chand, D. ;
Nain, A. K. ;
Ahmad, R. .
INTERNATIONAL JOURNAL OF THERMOPHYSICS, 2006, 27 (05) :1482-1493
[2]   Volumetric, ultrasonic, viscometric and refractive index behavior of binary mixtures of 2,2,4-trimethylpentane with aromatic hydrocarbons: An experimental and theoretical study [J].
Ali, A. ;
Nain, A. K. ;
Chand, D. ;
Ahmad, R. .
JOURNAL OF MOLECULAR LIQUIDS, 2006, 128 (1-3) :32-41
[3]   Ultrasonic and volumetric study of binary mixtures of benzyl alcohol with Amides [J].
Ali, A ;
Nain, AK .
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2002, 75 (04) :681-687
[4]   Physico-chemical studies of non-aqueous binary liquid mixtures at various temperatures [J].
Ali, A ;
Nain, AK ;
Kamil, M .
THERMOCHIMICA ACTA, 1996, 274 :209-221
[5]   Volumetric and ultrasonic studies of molecular interactions in binary mixtures of dimethyl sulfoxide with some aromatic hydrocarbons at different temperatures [J].
Ali, Anwar ;
Nain, Anil Kumar ;
Chand, Dinesh ;
Ahmad, Rizwan .
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2006, 79 (05) :702-710
[7]   VISCOSITIES AND ACTIVATION-ENERGIES OF VISCOUS-FLOW OF THE 1,2-ETHANEDIOL N,N-DIMETHYLFORMAMIDE BINARY SOLVENT SYSTEM [J].
CORRADINI, F ;
MARCHESELLI, L ;
MARCHETTI, A ;
TAGLIAZUCCHI, M ;
TASSI, L ;
TOSI, G .
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1992, 65 (02) :503-511
[8]  
Dean JA., 1956, LANGES HDB CHEM
[9]  
DEWAN SK, 1997, J SOLUTION CHEM, V26, P295
[10]   THERMODYNAMIC PROPERTIES OF (ETHAN-1,2-DIOL + WATER) AT THE TEMPERATURE 298.15-K .1. MOLAR VOLUMES, ISOBARIC MOLAR HEAT-CAPACITIES, ULTRASONIC SPEEDS, AND ISENTROPIC FUNCTIONS [J].
DOUHERET, G ;
PAL, A ;
HOILAND, H ;
ANOWI, O ;
DAVIS, MI .
JOURNAL OF CHEMICAL THERMODYNAMICS, 1991, 23 (06) :569-580