The solid state phase transformation of potassium sulfate
نویسندگان
چکیده
منابع مشابه
The Phase Transition of Potassium Sulfate
The discontinuous phase transition of K 2 S 0 4 is described by a semi-empirical model that uses the elastic stiffnesses cn and the changes in volume and entropy associated with the order-disorder transition. Consideration of the elastic anomaly (existence of soft, damped longitudinal acoustic phonons) in K 2 S 0 4 removes the disagreement between transition enthalpies AHlr measured calorimetri...
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A simple rotational viscometer has been constructed for measurements at elevated temperatures in the region 109 — 2 x 1012 poise, and has been used to study the deformation of pure fee lithium sulfate (temperature range 740 —860 °C) and mixtures of this salt with potassium sulfate. These substances resemble highly-viscous non-NEwroidan liquids, and for a given torque the apparent viscosity can ...
متن کاملThe Solubility of Potassium Sulfate in Thermodynamic view
The solubility of K2SO4 in water at 25°C was determined. Comparing the value ofthermodynamic solubility product constant, Ksp(th), (Ksp(th) = exp (-ΔGodiss RT) of the mentionedsalt to the value of concentration solubility product, Ksp(c) which is obtained from the observedsolubility, s/moL-1, Ksp(c) = 4s3, revealed a great difference. The difference can be satisfactorilyexplained using Debye- H...
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ژورنال
عنوان ژورنال: Solid State Communications
سال: 2007
ISSN: 0038-1098
DOI: 10.1016/j.ssc.2006.12.008