Partial enthalpy of mixing

This reaction stops when the liquid composition reaches point J, where SiC becomes stable in contact with the liquid and precipitated C. At this point, the equilibrium molar fraction of Si dissolved in M, X (Figure 7.2), is related to the partial enthalpy of mixing of Si in M, AHsi(M) (neglecting the partial excess entropy of mixing), and to the molar Gibbs energy of formation of SiC, AGf(SiC), by the equation ... 

Figure 7.3. Calculated values of molar fraction of Si in liquid metal M at the three phase M/SiC/Cg equilibrium (equation 7.4) as a function of the partial enthalpy of mixing of Si at infinite dilution in M. Arrows indicate values of AH (M for some metals M given in Appendix G.

AH partial enthalpy of mixing at infinite dilution of a solute i in a solvent j... 

Enthalpies of mixing or intermediary enthalpies of dilution, copolymer partial enthalpies of mixing (at infinite dilution), or copolymer (first) integral enthalpies of solution... 

Pasturel et al. (1983) have introduced another simple model, one which casts the partial enthalpy of mixing at infinite R dilution, AH, in terms of the change in (, the Fermi energy, and the change in volume, with alloying. This model addresses liquid alloys of R s with non-transition metals. These authors find that their measured and calculated values of AH", for the lanthanide series of R s in liquid Al, agree rather well, and, moreover, that both show the same dependence on atomic number as does the molar volume. 

The thermodynamic data of the intermetallic compounds of Cu, Ag and Au with rare earths and actinides are reported in tables 22-24. The values of the integral and partial enthalpies of mixing in the liquid state are shown in tables 25-27. 

Solvent partial enthalpies of mixing measured by calorimetry... 

In the case of adding an infinitesimal amount of polymer to the pnre solvent, the partial (molar or specific) enthalpy of solution of the polymer B is properly identiiled as the partial enthalpy of solntion of the polymer at infinite dilution, AsoiHb °, or the partial enthalpy of mixing of the polymer at infinite dilution, Its value at infinite dilution of the polymer is equal to the so-called first integral enthalpy... 

POLYMER PARTIAL ENTHALPIES OF MIXING (AT INFINITE DILUTION) OR POLYMER (FIRST) INTEGRAL ENTHALPIES OF SOLUTION... 

Excess Enthalpy. From Eq.(2), an estimation of the penetrant excess enthalpy in the concentration range from 3 to 14% by weight was obtained for n-Cs, n-Ce, ethanol and methanol. In the case of n-pentane, the partial enthalpy of mixing increases with increasing penetrant content. In the concentration interval up to 10% by weight, the... 

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