Evaluating Solubility of Sparingly Soluble Diprotic Acid Salts

• Jean M. Nigretto ^[1]
  1. [1] Cergy-Pontoise University

     Cergy-Pontoise University

     Arrondissement de Pontoise, Francia

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 78, Nº 5, 2001, pág. 631
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Students often feel it is arduous to conduct solubility calculations owing to the apparent difficulty of dealing with the presence of a solid phase that is ignored in the mass balance. This is especially true when they have to calculate the pH of solutions containing sparingly soluble diprotic acid salts in pure water because the forms of the soluble acid-base predominating species depend on this pH. The use of logarithmic concentration diagrams provides a convenient tool for finding approximate solutions to such problems. An application of this method based on a series of carbonate salts is presented.