NDLI: Calculating Method of Simultaneous Solubility of Sodium and Potassium Chlorides in Alkali Hydroxide Aqueous Solutions

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Calculating Method of Simultaneous Solubility of Sodium and Potassium Chlorides in Alkali Hydroxide Aqueous Solutions

Content Provider	Semantic Scholar
Author	Norio Take'uchi
Copyright Year	2012
Abstract	In this study a method for estimating the composition of the solution saturated by sodium . and potassium chlorides in the NaOH-KOH-NaCl-KCl-H2O system from the equilibrium values. of the NaOH-NaCl-H2O system and the KOH-KCl-H2O, is proposed. This method is based on the relation between the activity and the solubility product of a solute in anaqueous solution, and is. characterized by the use of the activity coefficients of sodium and potassium chlorides in the corresponding solutions of the NaOH-NaCl-H2O system and the KOH-KCl-R2O system instead of the activity coefficients of sodium and potassium chlorides in the solution of the NaOH-KOH-NaCl-KClH2O system. Therefore, the activity coeffilcients of sodium and potassium chlorides which have been respectively saturated in the sodium and potassium hydroxide aqueous solutions at 25°C, are derived from. the known equilibrium values of the NaOH-NaCl-H2O system and the KOH-KCl-H2O system, and they are related to the total ionic strength in the solutions. The activity coefficients of sodium and potassium chlorides which have been simultaneously saturated in the alkalihydroxide aqueous. solutions at 25°C, are also derived from the equilibrium values measured in this study. This method is comparatively effective to the estimation of the solubilities of chlorides in the alkali hydroxide aqueous solutions with hydroxide concentration of less than 6g-ion/1kg H2O, but it can not precisely estimate the solubilities of chlorides in the alkali hydroxide aqueous solutions. containing more hydroxides.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.jstage.jst.go.jp/article/swsj1965/28/2/28_93/_pdf/-char/ja
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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