Coefficient in water

Furthermore, we noticed in Table 23 that solutes which have negative B-coefficients in water have large positive B-coefficients when dissolved in methanol. The correlation will therefore be complete, if we find that these same solutes introduce an increase of entropy in water and a decrease in entropy when dissolved in methanol. 

Yasuda s free volume theory [57] has been proposed to explain the mechanism of permeation of solutes through hydrated homogeneous polymer membranes. The free volume theory relates the permeability coefficients in water-swollen homogeneous membranes to the degree of hydration and molecular size of the permeant by the following mathematical expression ... 

Where D is the apparent Ca2+ diffusion coefficient, D is the true diffusion coefficient in water, Ks is the buffer dissociation constant, and B is the concentration of the buffer. For a detailed analysis of Ca2+ diffusion in the presence of fixed and mobile buffers, see Wagner Keizer (1994). 

Nelson, P.E. and Hoff, J.E. Food volatiles gas chromatographic determination of partition coefficient in water-lipid systems. J. Food Sci, 33 479-482, 1968. 

Hayduk-Laudie Relationship for Diffusion Coefficient in Water... 

Zielinska et al. (1996) and Kelly and Holdren (1995) have summarized the stability in canisters of organics, some of which are U.S. EPA designated HAPs (hazardous air pollutants). Kelly and Holdren propose that for compounds whose stability in canisters is not known, estimates can be made based on species of similar physical and chemical characteristics. These characteristics include their vapor pressure, polarizability, water solubility, Henry s law coefficient in water, and estimated lifetimes with respect to reactions in air and in the aqueous phase. 

The following one gives the best prediction of the individual liquid-film mass transfer coefficient in water-treatment situations (Chem and Chien, 2002) ... 

In water. In CC14 Coefficient. In water. In CC14 Coefficient. 

Figure 5.8 Ratio of the activity coefficient in water (y/w) and in methanol/water [20% (v v) and 40% (v v) methanol] as a function of the molar volume (Vix, see Box 5.1) of the solute log(y // ) = a Vix + b. The three compound classes include the following compounds ...

Explain in words how organic cosolvents affect the activity coefficients in water-solvent mixtures Which organic solvents are most effective Is it true that the effect of an organic cosolvent is linearly related to its volume fraction in the solvent-water mixture Below which volume fraction can the effect of an organic cosolvent be neglected ... 

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