The Solubility of Potassium Sulfate in Thermodynamic view

محورهای موضوعی : Journal of Physical & Theoretical Chemistry

H. Aghaie ¹ , Z. Rezania ²

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تاریخ دریافت : 1394/02/19 تاریخ پذیرش : 1394/02/19 تاریخ انتشار : 1387/05/11

کلید واژه: Solubility product, Activity coefficient, Non ideality,

چکیده مقاله :

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- HOckel law and ion assocaition phenomenon.