The Teaching of Precipitation Equilibrium:: A New Approach

• Ana M. V. S. V. Cavaleiro ^[1]
  1. [1] Universidade de Aveiro

     Universidade de Aveiro

     Vera Cruz, Portugal

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 73, Nº 5 (May), 1996, págs. 423-425
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In this paper we present a simplified integrated approach to the calculation of the solubility in water of a salt, and the pH of the saturated solution, taking into account the acid-base reactions of the anion. A classification of the salt, based upon the values of the appropriate equilibrium constants, is done with the help of a decision tree. This classification is used as a guide for the identification of the assumptions that have to be made to obtain a set of easily resolvable equations. The application of the method is discussed with examples.