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H Nafe - One of the best experts on this subject based on the ideXlab platform.
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relationship between the partial Molar and Molar Quantity of a thermodynamic state function in a multicomponent mixture revisited
The Journal of Chemical Thermodynamics, 2013Co-Authors: H NafeAbstract:Abstract As far as a multicomponent mixture is concerned, different versions exist in the literature for the relationship between the partial Molar and Molar Quantity of a thermodynamic state function with the most prominent example of the two quantities being the activity coefficient of an arbitrary component and the excess Gibbs free energy of a mixture comprising this component. Since the relationships published so far have to a large degree been derived independently of each other and result from apparently conflicting approaches, they are still considered as separate subjects in the literature. It is demonstrated that despite this curious situation all relationships are equivalent to each other from a mathematical point of view.
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Relationship between the partial Molar and Molar Quantity of a thermodynamic state function in a multicomponent mixture – revisited
The Journal of Chemical Thermodynamics, 2013Co-Authors: H NafeAbstract:Abstract As far as a multicomponent mixture is concerned, different versions exist in the literature for the relationship between the partial Molar and Molar Quantity of a thermodynamic state function with the most prominent example of the two quantities being the activity coefficient of an arbitrary component and the excess Gibbs free energy of a mixture comprising this component. Since the relationships published so far have to a large degree been derived independently of each other and result from apparently conflicting approaches, they are still considered as separate subjects in the literature. It is demonstrated that despite this curious situation all relationships are equivalent to each other from a mathematical point of view.
Salah Khanahmadzadeh - One of the best experts on this subject based on the ideXlab platform.
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phase equilibria volumetric and compressibility properties of tetra n butylammonium bromide trisodium citrate system at temperatures 298 15 k 318 15 k and atmospheric pressure
Fluid Phase Equilibria, 2016Co-Authors: Hossein Hooshyar, Rahmat Sadeghi, Salah KhanahmadzadehAbstract:Abstract Liquid−liquid equilibrium data and phase diagram corresponding to new (salt + salt) aqueous biphasic system composed of tetra-n-butylammonium bromide and trisodium citrate were determined by varying temperature and atmospheric pressure. The effects of temperature and salt induced on the binodals and tie-lines of the investigated ATPS were also studied. It was found that an increase in temperature caused the expansion of the two-phase region and increased the slope and the length of the tie line. In order to obtain further evidence about the salting-out effect produced by the addition of trisodium citrate, Na3Cit to an aqueous solution of water-miscible tetra-n-butylammonium bromide, volumetric and compressibility behavior have been measured at temperatures (298.15 K–318.15 K). The densities and speeds of sound data have been utilized to calculate apparent Molar volumes, Vϕ, the apparent Molar isentropic compressibility, κϕ, the values of the apparent Molar Quantity at infinite dilution, V ϕ ο , κ ϕ ο and partial Molar characteristics include the volume and compressibility of transfer at infinite dilution, Δ t Y ϕ ο , TBAB from pure water to the aqueous salt solution.
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Phase equilibria, volumetric and compressibility properties of (tetra-n-butylammonium bromide + trisodium citrate) system at temperatures (298.15 K–318.15 K) and atmospheric pressure
Fluid Phase Equilibria, 2016Co-Authors: Hossein Hooshyar, Rahmat Sadeghi, Salah KhanahmadzadehAbstract:Abstract Liquid−liquid equilibrium data and phase diagram corresponding to new (salt + salt) aqueous biphasic system composed of tetra-n-butylammonium bromide and trisodium citrate were determined by varying temperature and atmospheric pressure. The effects of temperature and salt induced on the binodals and tie-lines of the investigated ATPS were also studied. It was found that an increase in temperature caused the expansion of the two-phase region and increased the slope and the length of the tie line. In order to obtain further evidence about the salting-out effect produced by the addition of trisodium citrate, Na3Cit to an aqueous solution of water-miscible tetra-n-butylammonium bromide, volumetric and compressibility behavior have been measured at temperatures (298.15 K–318.15 K). The densities and speeds of sound data have been utilized to calculate apparent Molar volumes, Vϕ, the apparent Molar isentropic compressibility, κϕ, the values of the apparent Molar Quantity at infinite dilution, V ϕ ο , κ ϕ ο and partial Molar characteristics include the volume and compressibility of transfer at infinite dilution, Δ t Y ϕ ο , TBAB from pure water to the aqueous salt solution.
Hossein Hooshyar - One of the best experts on this subject based on the ideXlab platform.
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phase equilibria volumetric and compressibility properties of tetra n butylammonium bromide trisodium citrate system at temperatures 298 15 k 318 15 k and atmospheric pressure
Fluid Phase Equilibria, 2016Co-Authors: Hossein Hooshyar, Rahmat Sadeghi, Salah KhanahmadzadehAbstract:Abstract Liquid−liquid equilibrium data and phase diagram corresponding to new (salt + salt) aqueous biphasic system composed of tetra-n-butylammonium bromide and trisodium citrate were determined by varying temperature and atmospheric pressure. The effects of temperature and salt induced on the binodals and tie-lines of the investigated ATPS were also studied. It was found that an increase in temperature caused the expansion of the two-phase region and increased the slope and the length of the tie line. In order to obtain further evidence about the salting-out effect produced by the addition of trisodium citrate, Na3Cit to an aqueous solution of water-miscible tetra-n-butylammonium bromide, volumetric and compressibility behavior have been measured at temperatures (298.15 K–318.15 K). The densities and speeds of sound data have been utilized to calculate apparent Molar volumes, Vϕ, the apparent Molar isentropic compressibility, κϕ, the values of the apparent Molar Quantity at infinite dilution, V ϕ ο , κ ϕ ο and partial Molar characteristics include the volume and compressibility of transfer at infinite dilution, Δ t Y ϕ ο , TBAB from pure water to the aqueous salt solution.
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Phase equilibria, volumetric and compressibility properties of (tetra-n-butylammonium bromide + trisodium citrate) system at temperatures (298.15 K–318.15 K) and atmospheric pressure
Fluid Phase Equilibria, 2016Co-Authors: Hossein Hooshyar, Rahmat Sadeghi, Salah KhanahmadzadehAbstract:Abstract Liquid−liquid equilibrium data and phase diagram corresponding to new (salt + salt) aqueous biphasic system composed of tetra-n-butylammonium bromide and trisodium citrate were determined by varying temperature and atmospheric pressure. The effects of temperature and salt induced on the binodals and tie-lines of the investigated ATPS were also studied. It was found that an increase in temperature caused the expansion of the two-phase region and increased the slope and the length of the tie line. In order to obtain further evidence about the salting-out effect produced by the addition of trisodium citrate, Na3Cit to an aqueous solution of water-miscible tetra-n-butylammonium bromide, volumetric and compressibility behavior have been measured at temperatures (298.15 K–318.15 K). The densities and speeds of sound data have been utilized to calculate apparent Molar volumes, Vϕ, the apparent Molar isentropic compressibility, κϕ, the values of the apparent Molar Quantity at infinite dilution, V ϕ ο , κ ϕ ο and partial Molar characteristics include the volume and compressibility of transfer at infinite dilution, Δ t Y ϕ ο , TBAB from pure water to the aqueous salt solution.
Yoshikata Koga - One of the best experts on this subject based on the ideXlab platform.
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To curve-fit or not to curve-fit: Comments on “Water structure enhancement in water-rich binary solvent mixtures. Part II. The excess partial Molar heat capacity of the water” by Yizhak Marcus in this journal
Journal of Molecular Liquids, 2012Co-Authors: Yoshikata KogaAbstract:Abstract Comments are given to show that for calculating the composition derivative of the mother thermodynamic Quantity in obtaining the partial Molar Quantity, the curve-fitting of the mother function followed by arithmetic differentiation of the resulting function is often dangerous. An example is provided.
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partial Molar Quantity of an intensive mother function
Journal of Chemical Physics, 2012Co-Authors: Yoshikata KogaAbstract:A new formal definition is given to the partial Molar Quantity of a component i for an intensive mother function. We perturb the entire system by increasing the amount of the target component by δni keeping others constant and measure the response of the system in terms of an intensive mother function, Φ, δΦ. We then define its partial Molar Quantity of the ith component, ϕi, as ϕi = [δΦ/{δni/(N + δni)]] in the limit of δni → 0. Thus, the physical meaning of ϕi is the effect of the ith component (only) on Φ of the system, just as the partial Molar Quantity for an extensive mother function. This new formal definition could serve as a starting point for statistical mechanics development of a microscopic connection to the third derivatives of G. We show a number of examples such as an enthalpic inter-solute interaction, a partial Molar S-V cross fluctuation density of solute, their analogues, and an excess partial Molar absorptivity of solute. These examples were used for studying the nature of aqueous solut...
Rahmat Sadeghi - One of the best experts on this subject based on the ideXlab platform.
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phase equilibria volumetric and compressibility properties of tetra n butylammonium bromide trisodium citrate system at temperatures 298 15 k 318 15 k and atmospheric pressure
Fluid Phase Equilibria, 2016Co-Authors: Hossein Hooshyar, Rahmat Sadeghi, Salah KhanahmadzadehAbstract:Abstract Liquid−liquid equilibrium data and phase diagram corresponding to new (salt + salt) aqueous biphasic system composed of tetra-n-butylammonium bromide and trisodium citrate were determined by varying temperature and atmospheric pressure. The effects of temperature and salt induced on the binodals and tie-lines of the investigated ATPS were also studied. It was found that an increase in temperature caused the expansion of the two-phase region and increased the slope and the length of the tie line. In order to obtain further evidence about the salting-out effect produced by the addition of trisodium citrate, Na3Cit to an aqueous solution of water-miscible tetra-n-butylammonium bromide, volumetric and compressibility behavior have been measured at temperatures (298.15 K–318.15 K). The densities and speeds of sound data have been utilized to calculate apparent Molar volumes, Vϕ, the apparent Molar isentropic compressibility, κϕ, the values of the apparent Molar Quantity at infinite dilution, V ϕ ο , κ ϕ ο and partial Molar characteristics include the volume and compressibility of transfer at infinite dilution, Δ t Y ϕ ο , TBAB from pure water to the aqueous salt solution.
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Phase equilibria, volumetric and compressibility properties of (tetra-n-butylammonium bromide + trisodium citrate) system at temperatures (298.15 K–318.15 K) and atmospheric pressure
Fluid Phase Equilibria, 2016Co-Authors: Hossein Hooshyar, Rahmat Sadeghi, Salah KhanahmadzadehAbstract:Abstract Liquid−liquid equilibrium data and phase diagram corresponding to new (salt + salt) aqueous biphasic system composed of tetra-n-butylammonium bromide and trisodium citrate were determined by varying temperature and atmospheric pressure. The effects of temperature and salt induced on the binodals and tie-lines of the investigated ATPS were also studied. It was found that an increase in temperature caused the expansion of the two-phase region and increased the slope and the length of the tie line. In order to obtain further evidence about the salting-out effect produced by the addition of trisodium citrate, Na3Cit to an aqueous solution of water-miscible tetra-n-butylammonium bromide, volumetric and compressibility behavior have been measured at temperatures (298.15 K–318.15 K). The densities and speeds of sound data have been utilized to calculate apparent Molar volumes, Vϕ, the apparent Molar isentropic compressibility, κϕ, the values of the apparent Molar Quantity at infinite dilution, V ϕ ο , κ ϕ ο and partial Molar characteristics include the volume and compressibility of transfer at infinite dilution, Δ t Y ϕ ο , TBAB from pure water to the aqueous salt solution.