Molybdovanadophosphoric acids and their salts. II. Investigation of solution properties

C. J. Hallada, G. A. Tsigdinos, Bruce S Hudson

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Abstract

Conductivity and pH measurements were made on the heteropoly acids H4[PMo11VO40] and H5[PMo10V2O40] at 25° in aqueous solution to establish the stability and acid strength of the compounds. The conductivity data were treated using the Onsager-Fuoss theory to find values of Λ° and å. The data show that H4[PMo11VO40] and H5[PMo10V2O40] are strong 1:4 and 1:5 electrolytes and that H5[PMo10V2O40] is the more stable compound in solution. Hydrolytic instability of H6[PMo9V3O40] precludes a firm conclusion about the strength of this acid.

Original languageEnglish (US)
Pages (from-to)4304-4307
Number of pages4
JournalJournal of Physical Chemistry
Volume72
Issue number12
StatePublished - 1968
Externally publishedYes

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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Hallada, C. J., Tsigdinos, G. A., & Hudson, B. S. (1968). Molybdovanadophosphoric acids and their salts. II. Investigation of solution properties. Journal of Physical Chemistry, 72(12), 4304-4307.