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Ultrasonic Behaviour of Benzene + Carbon Disulphide and Carbon Disulphide + Carbon Tetrachloride Systems – Comparative Study of the Significant Structure Theory and Flory Theory

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Isothermal compressibility, internal pressure, Griineisen parameter and thermodynamic properties of the binary systems: benzene 4- carbon disulphide, and carbon disulphide + carbon tetrachloride have been studied at 25 °C and at 0·25, 0·50 and 0·75 mole fractions through ultrasonic velocity, heat capacity and density measurements. The partition function of the systems has been evaluated on the basis of the significant structure theory due to Eyring and co-workers basing on the compressibility measurements. The properties of mixtures have been also determined through the statistical thermodynamical theory due to Flory. Both the theories have been found to be quite satisfactory in predicting the excess properties of the two systems.

Zusammenfassung

Durch Messungen der Ultraschallgeschwindigkeit, der Wärmekapazität und der Dichte wurden die isotherme Kompressibilität, der innere Druck, der Grüneisen-Parameter und thermodynamische Eigenschaften der binären Systeme Benzol-Schwefelkohlenstoff und Schwefelkohlenstoff- Tetrachlorkohlenstoff bei 25 °C und bei den Molenbrüchen 0,25, 0,5 und 0,75 untersucht. Die Verteilungsfunktion der Systeme wurde auf der Grundlage der Strukturtheorie nach Eyring und seinen Mitarbeitern ermittelt, die auf Kompressibilitätsmessungen beruht. Die Eigenschaften der Gemische wurden ebenso mit Hilfe der statistischen thermodynamischen Theorie nach Flory bestimmt. Es stellte sich heraus, daßbeide Theorien die Eigenschaften der beiden Systeme in recht zufriedenstellender Weise vorhersagen.

Sommaire

On a déterminé la compressibilité isotherme, la pression interne, le paramètre de Grüneisen et d'autres paramètres thermodynamiques des systèmes binaires (benzéne + bisulfure de carbone) et (bisulfure + tétrachlorure de carbone) à 25 °C et aux proportions molaires de 0,25, 0,50 et 0,75 à partir de mesures de densités, de chaleurs spécifiques et de célérités ultrasonores. En se servant de measures de compressibilité on a évalué la fonction de partition des deux systèmes selon la théorie de la structure significante, due à Eyring et à ses collaborateurs. On a également déterminé les propriétés des deux mélanges en s'appuyant sur la théorie thermodynamique statistique de Flory. Toutes les deux théories ont donné satisfaction dans la prédiction des propriétés excédentaires des deux systèmes.
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Document Type: Research Article

Publication date: May 1, 1990

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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