Solubility of gallium(III) oxyhydroxide in aqueous NaCl solutions at 100°C

Miho Uchida, Akitsugu Okuwaki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The hydrolysis-precipitation equilibrium reaction of aqueous gallium(III) solution was investigated in 0-3 mol-kg-1 NaCl media at low pH at 100°C using a pressure-tight glass vessel. All precipitates were identified as GaOOH. The results were analyzed with a nonlinear least-squares computer program to obtain the solubility product Kso for gallium(III) oxyhydroxide using a single-parameter type of Debye-Hückel equation. The value of log Kso for GaOOH(s) + 3H+ ⇄ Ga3+ + 2H2O was -0.60 at 100°C. The solubility product calculated from thermodynamic data was compared with the experimental result.

Original languageEnglish
Pages (from-to)699-708
Number of pages10
JournalJournal of Solution Chemistry
Volume26
Issue number7
DOIs
Publication statusPublished - 1997 Jul

Keywords

  • Gallium(III)
  • Ionic strength
  • Precipitation
  • Solubility product
  • Thermodynamics

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Physical and Theoretical Chemistry

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