Potassium thermodynamic properties

Wagman, D.D. Evans, W.H. Parker, V.B. Schumm, R.H. "Chemical Thermodynamic Properties of Compounds of Sodium, Potassium and Rubidium An Interim Tabulation of Selected Values," NBSIR 76-1034... 

The synthesis of HBr04 and rubidium and potassium salts was accomplished, using oxidation of bromate by XeF2 or (preferably) molecular fluorine in aqueous solution.19 Spectral studies20 show that the perbromate ion is tetrahedral in both the solid-state and aqueous solutions. The thermodynamic properties and thermal decomposition of individual salts are discussed under each element. A more general article on various properties of the perbromates was published by Herrell and Gayer.21... 

R. H. Chemical thermodynamic properties of compounds of sodium, potassium, and rubidium An interim tabulation of selected values. Nat l Bur. Stand.Interagency Report 76-1034, 76 p. (1976). 

Pabalan, R., and Pitzer, K. S. (1988) Apparent Molar Heat Capacity and Other Thermodynamic Properties of Aqueous Potassium Chloride Solutions to High Temperatures and Pressures, J. Chem. Eng. Data 33, 354-362. 

Ftiran. Furfuran oxole tetrole divinylene oxide. C4H,0 mol wt 68.07. C 70.57%, H 5.92%, O 23.50%. Occurs in oils obtained by the distillation of rosin contg pine wood. Prepd by decarboxylation of 2-furancarboxylic acid Wilson, Org. Syn. coll. vol. I (2nd ed., 1941), p 274. Has been prepd directly from furfural Over hot soda-lime Or by dropping furfural on a fused mixt of sodium and potassium hydroxides Hurd et ai.. J. Am. Chem. Soc. 84, 2532 (1932). Toxicity data Henderson, J. Pharmacol Exp. Ther. 57, 394 (1936). Thermodynamic properties G. B. Guthrie, Jr. ei ai, J. Am Chem, Soc. 74, 4662 (1952). 

The electrolyte in the measurements of the thermodynamic properties of bismuth sele-nide and telluride and of antimony telluride was the easily melted mixture of anhydrous zinc chloride (analytic purity) with sodium and potassium chlorides (chemical purity grade). The melting point of this mixture was Tmp — 208 C. The thermodynamic properties of antimony selenide were determined using a mixture of aluminum chloride (distilled twice in vacuum) and sodium chloride (chemical purity grade). The meltii point of this mixture was Tmp = 150-155°C. 

The thermodynamic properties of aluminum antimonide have been previously studied by the electromotive force (emf) method using aluminum chloride as the electroljrte in fused lithium and potassium chlorides [4], The calculated value [4] of the standard entropy of solid aluminum antimonide S 98 = 6.0 0.8 eu/g-atom and that obtained by Piesbergen [5] from measurements of low-temperature specific heat, = 7.68 0.05 eu/g-atom do not agree even within the... 

The electrical properties of the alkali metal salt complexes are of interest as solid electrodes for batteries (27, 27a). There is particular interest in alkali metal-thiocyanate salt complexes this interest is related to the anion having a high lyotropic number and a correspondingly high conductivity (see Table 4). The complete phase diagram has been published for the potassium thiocyanate/ and sodium/thiocyanate/polyethylene glycol system (28), and various thermodynamic properties have... 

Leonesi D, Piantoni G, Berchiesi G, Franzosini P (1968) Thermodynamic properties of organic acid salts. III. Enthalpy and entropy of fusion of sodium and potassium, formates. 

Goldman G, Todheide K (1976) Equation of state and thermodynamic properties of molten potassium chloride to 1320 K and 6 kbar. Z Naturforsch 31a 769-776... 

Grpnvold F, Meisingset KK (1982) Thermodynamic properties and phase transitirais of salt hydrates between 270 and 400 K. I. Ammimium aluminum sulfate, potassium aluminum sulfate, aluminum sulfate, zinc sulfate, sodium sulfate, and sodium thiosulfate hydrates. J Chem Thermodyn 14 1083-1098... 

As stated above the preference for one of these structures depends on the presence of alkali metal ions, most notably on the presence of sodium or potassium ions. Sen Gilbert [24] have proposed a sodium-potassium conformational switch to explain their results of differential stabilisation of guanine-rich quartet structures by the two ions. More detailed studies revealed that certain ions and specific base sequences, among other factors, can influence the equilibrium between these structures. Thermodynamic properties have been probed through the use of optical and calorimetric methods. 

Lemmon, A. W Jr., H. W. Deem, E. H. Hall and J. F. Walling, 1964, The Thermodynamic and Transport Properties of Potassium, Proc. of High Temperature Liquid Metal Technology Meeting, Vol. 1, 88-114, USAEC Rep. ORNL-3605. (2)... 

One of the important properties of surfactants that is directly related to micelle formation is solubilization. Solubilization may be defined as the spontaneous dissolving of a substance (solid, liquid, or gas) by reversible interaction with the micelles of a surfactant in a solvent to form a thermodynamically stable isotropic solution with reduced thermodynamic activity of the solubilized material. Although both solvent-soluble and solvent-insoluble materials may be dissolved by the solubilization mechanism, the importance of the phenomenon from the practical point of view is that it makes possible the dissolving of substances in solvents in which they are normally insoluble. For example, although ethylbenzene is normally insoluble in water, almost 5 g of it may be dissolved in 100 mL of a 0.3 M aqueous solution of potassium hexadecanoate to yield a clear solution. 

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