Revista: | Quimica nova |
Base de datos: | PERIÓDICA |
Número de sistema: | 000199208 |
ISSN: | 0100-4042 |
Autores: | Koeller, Sergio Luiz1 Combes, Richard Louis2 |
Instituciones: | 1Universidade Federal Rural do Rio de Janeiro, Departamento de Quimica, Seropedica, Rio de Janeiro. Brasil 2Universite de Paris XIII (Paris-Nord), Institut Galilee, París. Francia |
Año: | 2002 |
Periodo: | Mar-Abr |
Volumen: | 25 |
Número: | 2 |
Paginación: | 226-230 |
País: | Brasil |
Idioma: | Portugués |
Tipo de documento: | Artículo |
Enfoque: | Experimental |
Resumen en inglés | Equilibrium constants (K) of some oxoacidbasic reactions in molten NaCl in the temperature range of 1100K to 1200K, have been measured potentiometrically with a calcia stabilized zirconia oxide ion (O2-) indicator electrode. In molten NaCl at 1100K the pKs values (in molality scale) for HCl/H2O and HO-/H2O are respectively 11.0 ± 0.3; 1.6 ± 0.3 and the pKs for CaO is 4.3 ± 0.3. The results have been compared with those determined previously by Combes for the molten equimolar NaCl-KCl mixture and are in good agreement with literature data and gives some qualitative explanation of the comparison of oxoacidbasic properties between molten NaCl and NaCl-KCl |
Disciplinas: | Química |
Palabras clave: | Fisicoquímica y química teórica, Química analítica, Cloruro de sodio, Reacciones, Reacciones oxoacidobásicas, Solubilidad, Sales, Sales fundidas |
Keyword: | Chemistry, Analytical chemistry, Physical and theoretical chemistry, Sodium chloride, Reactions, Oxoacidbasic reactions, Solubility, Salts, Molten salts |
Texto completo: | Texto completo (Ver HTML) |