| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000199208 |
| ISSN: | 0100-4042 |
| Authors: | Koeller, Sergio Luiz1 Combes, Richard Louis2 |
| Institutions: | 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 |
| Year: | 2002 |
| Season: | Mar-Abr |
| Volumen: | 25 |
| Number: | 2 |
| Pages: | 226-230 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | 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 |
| Disciplines: | Química |
| Keyword: | 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 |
| Full text: | Texto completo (Ver HTML) |
