Water relative partial molar enthalpy

The last term in the calculation is L f, the relative partial molar enthalpy for pure water, which is zero. 

Figure 18.6. Relative partial molar enthalpy of water in serine solutions. Data from Ref. 4.

The solubility of pure solid glycine at 25°C in water is 3.33 moles (kg H20). The activity coefficient of glycine in such a saturated solution is 0.729. Data for the relative partial molar enthalpies of glycine in aqueous solution are tabulated in Exercise 15 of Chapter 18. Given AfG and... 

Figure 42. Relative partial molar enthalpies for solutes in ethyl alcohol + water mixtures at 298 K reference solvent is a mixture where x2 = 0-235 (a) t-BuCl, (b) i-PrBr, (c) CCI4, (d) ethyl acetate and (e) KC1 (Arnett et al., 1965).

Attard, P. (1993) Asymptotic analysis of primitive model electrolytes and the electrical double layer. Phys. Rev. E 48, 5, 3604-3621, ISSN 1063-651X Bahe, L. W., (1972a) Structure in concentrated electrolyte solutions. Field-dielectric-gradient forces and energies. /, Phys. Chem., 76, 7,1062-1071, ISSN 0022-3654 Bahe, L. W., (1972b) Relative partial molar enthalpies and heats of dilution of electrolytes in water. /, Phys. Chem., 76,11,1608-1611, ISSN 0022-3654 Bahe, L. W. Parker, D. (1975) Activity coefficients of 2 1 electrolytes in structured electrolyte solutions. /, Am. Chem. Soc., 92, 20, 5664-5670, ISSN 0002-7863 Bockris, J. O M. Reddy, A. K. N (2000) Modern Electrochemistry. Vol. 1 Ionics. 2 edition. 

The following data, taken from the National Bureau of Standards compilation. Selected Values of Chemical Thermodynamic Properties gives the standard enthalpy of formation of hydrogen chloride from its elements at 25 °C in kg cal mol (Thus the difference between the first and third results gives the heat of dissolving 1 mol of HCl gas in 2 mol of water.) Show that the partial molar enthalpy of hydrogen chloride in a 10 mol dm solution, relative to the elements, is —36.26 kg cal mol , and that the partial molar enthalpy of water in the same solution, relative to pure liquid water, is —0.43 kg cal mol. ... 

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