Solubility of Ferrate(VI) in NaOH-KOH Mixtures at Different Temperatures Academic Article

abstract

• The solubility of potassium ferrate(VI) (K2FeO4) was measured in a mixture solution containing various molar ratios of KOH and NaOH at a total concentration of 14 M from (10 to 60) C. The solubility of K2FeO4 decreased necause of the presence of K+ in the solution mixture. The solubility (S*) was expressed as log S* = 5.830-2019/T-5.845XK+0.5 + 1.595XK+ + 724XK+0.5/T ( = 0.024), where XK+ is the mole fraction of K+ in the solution mixture and T is in Kelvin. A comparison of the values of S* in different alkali metal hydroxide solutions showed that the solubility of K2FeO4 was diminished in KOH and CsOH and similarly in LiOH and NaOH solutions. The solubility product constant (Ksp*), calculated from the solubility measurements, was given as log Ksp* = 18.10-6055/T-17.535XK+0.5 + 4.785XK+ + 2171XK+0.5/T ( = 0.061). The heat of dissolution (Hdiss) decreased linearly with an increase in the mole fraction of K+ ions. The significance of the solubility results is briefly discussed. 2010 American Chemical Society.

authors

• Sharma, Virender

published proceedings

• JOURNAL OF CHEMICAL AND ENGINEERING DATA

author list (cited authors)

• Sharma, V. K., Macova, Z., Bouzek, K., & Millero, F. J.

citation count

• 10

complete list of authors

• Sharma, Virender K||Macova, Zuzana||Bouzek, Karel||Millero, Frank J

publication date

• December 2010

publisher

• American Chemical Society (ACS)  Publisher

published in

• Journal of Chemical and Engineering Data  Journal

Digital Object Identifier (DOI)

• 10.1021/je100417d

start page

• 5594

end page

• 5597

volume

• 55

issue

• 12

URL

• http://dx.doi.org/10.1021/je100417d