Enthalpies of Mixing in Silver Bromide—Alkali Bromide and Thallium Chloride—Alkali Chloride Liquid Mixtures

1965 ◽  
Vol 42 (11) ◽  
pp. 3752-3757 ◽  
Author(s):  
L. S. Hersh ◽  
A. Navrotsky ◽  
O. J. Kleppa
Keyword(s):  
Liquid Mixtures ◽  
Silver Bromide ◽  
Alkali Chloride ◽  
Enthalpies Of Mixing ◽  
Thallium Chloride

scholarly journals Calorimetric Investigation of NdI3-MI Liquid Systems (M = Li, Na, K, Rb, Cs)

2002 ◽  
Vol 57 (3-4) ◽  
pp. 136-142 ◽  
Author(s):  
L. Rycerz ◽  
M. Gaune-Escarda
Keyword(s):  
Binary Systems ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Enthalpies Of Formation ◽  
Calorimetric Investigation ◽  
Liquid Alkali Metal ◽  
Enthalpies Of Mixing ◽  
Formation Enthalpies ◽  
Liquid Systems ◽  
Metal Iodide

The molar enthalpies of mixing, Δmix Hm, of the liquid alkali metal iodide - neodymium iodide binary systems have been measured over the whole composition range at 1068 K with an accuracy of about 6%. The apparatus used was a Calvet - type high - temperature microcalorimeter. In all the systems under investigation the enthalpies of mixing are negative, with minimum values close to −1.1, −4.8, −10.3, −16.2, and −20.0 kJ mol−1 for LiI-NdI3, NaI-NdI3, KI-NdI3, RbI-NdI3, and CsI-NdI3, respectively, at the mole fractions xNdI3 ⋍ 0.30 - 0.40 except the LiI-NdI3 system, where it is at the NdI3-rich compositions. The molar enthalpies of formation ΔformHm at 1068 K for M = Li, Na, K, Rb, and Cs, arising from the reaction 3 MI(l) + NdI3(l), are found to be −4.5, −17.5, −39.1, −59.9, and −73.3 kJmol−1, respectively They are compared with the formation enthalpies determined previously for the (3MCl, NdCl3) and (3MBr,NdBr3) liquid mixtures. These enthalpies become less negative with increase of the radius of the halide ion.

A structural model for magnesium chloride-containing melts

1970 ◽  
Vol 48 (10) ◽  
pp. 1585-1597 ◽  
Author(s):  
A. D. Pelton ◽  
W. T. Thompson
Keyword(s):  
Phase Diagrams ◽  
Magnesium Chloride ◽  
Structural Model ◽  
Quantitative Agreement ◽  
Adjustable Parameter ◽  
Alkali Chloride ◽  
Enthalpies Of Mixing ◽  
Complex Anions

A structural model for MgCl2-containing melts has been developed, based upon the assumption of MgCl42− complex anions. For the five MgCl2 – alkali chloride and for the MgCl2–AgCl systems, the model gives quantitative, or nearly quantitative, agreement to the experimental enthalpies of mixing in all six systems; to the partial entropies of mixing of alkali chloride in the four systems for which data are available; and to both sides of the phase diagrams in the three systems for which data are available. This is accomplished with the use of only one adjustable parameter for each system, and one other adjustable parameter for all the systems taken together. The same model also quantitatively accounts for the enthalpies of mixing in the five NiCl2 – alkali chloride systems.

scholarly journals Enthalpies of Mixing in Liquid Mixtures of Lithium Sulphate and Sodium Sulphate.

1970 ◽  
Vol 24 ◽  
pp. 709-710 ◽  
Author(s):  
Jan Lützow Holm ◽  
Ulf Aava ◽  
A. Haaland ◽  
Dag Resser ◽  
S. E. Rasmussen ◽  
...  
Keyword(s):  
Liquid Mixtures ◽  
Sodium Sulphate ◽  
Enthalpies Of Mixing ◽  
Lithium Sulphate
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