The heat capacities, volumes, and expansibilities of tert-butyl alcohol – water mixtures from 6 to 65 °C

1977 ◽  
Vol 55 (5) ◽  
pp. 856-862 ◽  
Author(s):  
Cees de Visser ◽  
Gerald Perron ◽  
Jacques E. Desnoyers
Keyword(s):  
Microphase Separation ◽  
Butyl Alcohol ◽  
Heat Capacities ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Water ◽  
Order Of Magnitude ◽  
Hydrophobic Solutes ◽  
High Concentrations ◽  
Specific Heat Capacities

The densities and specific heat capacities of mixtures of tert-butyl alcohol (TBA) and water (W) have been measured at 6, 10, 25, 40, 55, and 65 °C. From these data the apparent molal volumes[Formula: see text], heat capacities[Formula: see text], and expansibilities [Formula: see text] were evaluated. Generally, the temperature dependence of these quantities is rather characteristic of hydrophobic solutes in water. At high concentrations [Formula: see text]and [Formula: see text] resemble those of surfactants, suggesting the existence of some microphase separation. At low temperatures [Formula: see text] show a significant hump as a function of concentration, which is probably not due to the presence of the —OH group on the TBA molecule. A similar behaviour is observed for[Formula: see text]. The [Formula: see text] and [Formula: see text] of water in TBA have also been calculated; [Formula: see text] is in theTBA-rich region 2 to 2.5 cm3 mol−1 smaller than the molar volume of water, but [Formula: see text] is of the same order of magnitude as the molar heat capacity of water.

Enthalpies, heat capacities, and volumes of transfer of the tetrabutylammonium ion from water to aqueous mixed solvents from the point of view of the scaled-particle theory

1976 ◽  
Vol 54 (23) ◽  
pp. 3800-3808 ◽  
Author(s):  
Nicole Desrosiers ◽  
Jacques E. Desnoyers
Keyword(s):  
Mixed Solvents ◽  
Butyl Alcohol ◽  
Heat Capacities ◽  
Point Of View ◽  
Scaled Particle Theory ◽  
Particle Theory ◽  
Tert Butyl ◽  
Tetrabutylammonium Ion ◽  
Tert Butyl Alcohol ◽  
Alcohol Water

The enthalpies, heat capacities, and volumes of transfer of the tetrabutylammonium ion from water to urea–water, tert-butyl alcohol–water, and sodium chloride–water mixtures have been calculated at 25 °C using the scaled-particle theory. In general, the signs, magnitudes, and overall trends in the cosolvent concentration dependence of the properties are predicted from the cavity contributions only. These calculations are found to be very sensitive to the diameters chosen for the various species.For these calculations it was necessary to measure with a dilatometer the coefficients of thermal expansion of tert-butyl alcohol–water mixtures as a function of concentration and temperature.

Diffusive dynamics of water in tert-butyl alcohol/water mixtures

2004 ◽  
Vol 120 (10) ◽  
pp. 4759-4767 ◽  
Author(s):  
Vania Calandrini ◽  
Antonio Deriu ◽  
Giuseppe Onori ◽  
Ruep E. Lechner ◽  
Jörg Pieper
Keyword(s):  
Butyl Alcohol ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Water ◽  
Diffusive Dynamics

Coefficients B de viscosité dans les systèmes ternaires aqueux. III. Halogénures alcalins–alcool tert-butylique–eau à 25 °C

1979 ◽  
Vol 57 (24) ◽  
pp. 3247-3252 ◽  
Author(s):  
Marc Palma ◽  
Jean-Pierre Morel
Keyword(s):  
Linear Relationship ◽  
Structural Properties ◽  
Organic Solvents ◽  
Linear Correlation ◽  
Butyl Alcohol ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Water ◽  
Coefficient Of Viscosity

We have measured the coefficient of viscosity B at 25 °C of HCl, LiCl, NaCl, KCl, RbCl, KI, and KBr in the mixtures of aqueous organic solvents containing from 10 to 40% tert-butyl alcohol by weight (X), the concentration of electrolyte varying from 0.1 to 0.3 M.Plots of B = f (x) show points of inflexion and minima whose positions can be explained by the structural properties of the mixed solvent.In water, a linear relationship between the entropy of hydration and coefficient B of the ions is observed. In the same way, it can be shown that a linear correlation exists between the entropy of solvation and coefficient B of the electrolytes for all the mixtures studied.These correlations lead to the characterization of two distinct zones (X < 20% and X > 20%) for the range of tert-butyl alcohol–water mixtures. [Journal translation]

Pressure effect on water dynamics in tert-butyl alcohol/water solutions

2006 ◽  
Vol 18 (36) ◽  
pp. S2363-S2371 ◽  
Author(s):  
Vania Calandrini ◽  
Antonio Deriu ◽  
Giuseppe Onori ◽  
Alessandro Paciaroni ◽  
Mark T F Telling
Keyword(s):  
Pressure Effect ◽  
Butyl Alcohol ◽  
Water Dynamics ◽  
Water Solutions ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Water
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