Properties of binary mixtures

DiFFySION IN BINARY GAS MIXTURES 10.2.1. Properties of binary mixtures 

If A and B are ideal gases in a mixture, the ideal gas law, equation 2.15, may be applied to each gas separately and to the mixture  

Thus for a system at constant pressure P and constant molar concentration C  

By substituting from equations 10.7a and 10.7ib into equation 10.4, the mass transfer rates Na and Ag can be expressed in terms of partial pressure gradients rather than concentration gradients. Furthermore, Na and Ag can be expressed in terms of gradients 

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Presents a variety of measured thermodynamic properties of binary mixtures these properties are often represented by empirical equations. 

Bourrel M, Bernard D, Graciaa A (1984) Properties of binary mixtures of anionic and cationic surfactants Micellization and Microemulsions. Tenside Deterg 21 311-318... 

In a previous publication ( ), results were presented on the micellar properties of binary mixtures of surfactant solutions consisting of alkyldimethylamine oxide (C12 to Cig alkyl chains) and sodium dodecyl sulfate. It was reported that upon mixing, striking alteration in physical properties was observed, most notably in the viscosity, surface tension, and bulk pH values. These changes were attributed to 1) formation of elongated structures, 2) protonation of amine oxide molecules, and 3) adsorption of hydronium ions on the mixed micelle surface. In addition, possible solubilisation of a less soluble 1 1 complex, form between the protonated amine oxide and the long chain sulfate was also considered. 

During the past few years, the determination of the interfacial properties of binary mixtures of surfactants has been an area in which there has been considerable activity on the part of a number of investigators, both in industry and in academia. The Interest in this area stems from the fact that mixtures of two different types of surfactants often have interfacial properties that are better than those of the individual surfactants by themselves. For example, mixtures of two different surface-active components sometimes reduce the interfacial tension at the hydrocarbon/water interface to values far lower than that obtained with the individual surfactants, and certain mixtures of surfactants are better foaming agents than the individual components. For the purpose of this discussion we define synergism as existing in a system when a given property of the mixture can reach a more desirable value than that attainable by either surface-active component of the mixture by itself. 

A Physical Chemistry Lab Project The Effect of Composition on Several Physical Properties of Binary Mixtures of Common Liquids 218... 

S. Cabani and N. Ceccanti, Thermodynamic Properties of Binary Mixtures of Cyclohexane with Cyclic Amines or Cyclic Ethers at 298.15 K , J. Chem. Thermodyn., 5, 9-20 (1973) ... 

Rizzo A, Coriani S, Marchesan D, L opezCacheiro J, Fern andez B, Hattig C (2006) Density dependence of electric properties of binary mixtures of inert gases. Mol Phys 104 305-318... 

Rheological Properties of Binary Mixtures of Equal Concentration... 

Fell, J.T. Compaction properties of binary mixtures. In Pharmaceutical Powder Compaction Technology, Alderborn, G., Nystrom, C., Eds. Marcel Dekker, Inc. New York, 1996 501-515. 

Yang, J. Griffiths, P.R. Goodwin, A.R.H. Comparison of methods for calculating thermodynamic properties of binary mixtures in the sub and super critical state Lee-Kesler and cubic equations of state for binary mixtures containing either CO2 or H2S. J. Chem. Thermo. 2003, 35, 1521-1539. 

In this chapter, we presented an approach related to the molecular-microscopic properties of binary mixtures composed of two types of ILs - alkylammonium and dialkylimidazolium-based ILs - with molecular solvents of different structures. 

Mancini PME, Fortunate G, Adam C, Vottero LR (2008) Solvent effects on chemical processes. New solvents designed on the basis of the molecular-microscopic properties of binary mixtures molecular solvent + 1,3-dialkylimidazolium ionic liquids. J Phys Org Chem... 

As we have seen it is the intermolecular forces that influence the solubility of the components. This, in turn, determines the other properties of binary mixtures which are siiiiiniarized in Fig. 43 after Thormann [72]. 

While we have studied the properties of binary mixtures at constant temperature so far we shall now examine the behaviour of these mixtures at constant pressure. The conditions are those found in distillation, which is normally an isobaric process tending to establish equilibrium between the liquid and vapour phases. A boiling point diagram shows the boiling points and the equilibrium compositions of binary mix-... 

The Maier-Saupe theory has been extended by Humphries, James and Luckhurst, and more recently by Palffy-Muhoray et al., to investigate the properties of binary mixtures. The latter treatment has led to some significant conclusions ... 

Finally, there have been at least three attempts to fit the properties of binary mixtures over a range of T, p, and jc by a scaled equation of state. These assume scaling, and usually fit j3 to a coexistence curve and choose a second exponent by a least-squares or visual fit. Table 8 summarizes these. Of these, the most... 

A computerized bibliography of measurements of thermodynamic properties of binary mixtures is included. I believe that such a bibliography is much more useful than any attempt at compilation of smoothed and selected critical tables. We hope that the bibliography will be kept up to date and reissued from time to time, probably as computer output. In the meantime any of the group who compiled it would be glad to receive notice of omissions or of new entries. September 1977 M. L. McG. 

Table 9-2 Properties of binary mixture usii the Soave-Redlich-Kwong equation of state. Subscript irefers to pure...

Torres RB, Marchiore ACM, Volpe PLO (2006) Volumetric properties of binary mixtures of (water-1-organic solvents) at temperatures between T=288.15 K and T=303.15 K at p = 0.1 MPa, J Chem Thermodyn 38 526-541... 

Law of mixtures (rule of mixtures). Properties of binary mixtures lie between the corresponding properties of the pure components and are proportional to the volume fractions v (sometimes weight or mole fractions) of the components. For example, the density p of a blend is given by ... 

Kiselev, S.B. and Rainwater, J.C. (1997) Extended law of corresponding states and thermodynamic properties of binary mixtures in and beyond the critical region. Fluid Phase Equilibria 141, 129-154. 

Mairs, T. E. Swinton, F. L. The thermodynamic properties of binary mixtures containing an octane. II. Excess Ghbbs functions J. Chem. Thermodyn. 1980,12, 575-580... 

Comelli, F. Francesconi, R. Thermodynamic properties of binary mixtures containing l,2.enoxvbutane + four alkanols at 298.15 K /. Chem. Eng. Data 1996,41, 1392-1396 epoxybutane + tour alkanols at... 

Ortega, J. Espiau, F. Postigo, M. Vapor-hquid equhibria at 101.32 kPa and excess properties of binary mixtures of butyl esters... 

Cabani, S. Ceccanti, N. Thermodynamic properties of binary mixtures of cyclohexane with cychc amines or cychc ethers J. Chem. Thermodyn. 1973,5, 9-20... 

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