| Campo DC | Valor | Idioma |
|---|
| dc.contributor.author | Combes, R. | - |
| dc.contributor.author | Tremillon, B. | - |
| dc.contributor.author | Andrade, F. de | - |
| dc.creator | Combes, R. | - |
| dc.creator | Tremillon, B. | - |
| dc.creator | Andrade, F. de | - |
| dc.date.accessioned | 2013-03-04T18:18:44Z | - |
| dc.date.available | 2013-03-04T18:18:44Z | - |
| dc.date.issued | 1977 | - |
| dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/8755 | - |
| dc.description | p. 297–308 | pt_BR |
| dc.description.abstract | The conditional solubility of scheelite CaWO 4 in molten NaCI--KC1 (1 : 1) has been studied
either in oxobasic or oxoacidic media. In the former case it is increased by formation of
sparingly soluble CaO according to:
Ca 2+ + 02- ~ CaO(s), pK Ca° = 10800/T-- 5.8 (molality scale)
In the later case, WO 2- behaves as an oxobase according to the following equilibria:
WO42- ~- WO 3 (s) + 02_ pK 0 = 10.0 at 1000 K
3 WO2--¢- W30120+ 02_ pK 3 = 12.7 at 1000 K
The latter equilibrium favours an increase in the W VI solubility when pO 2- is increased, for
instance by injection of HC1. The whole set of results has been summarized by a conditional
solubility diagram of scheelite versus pO 2-. | pt_BR |
| dc.language.iso | en | pt_BR |
| dc.publisher | Journal of Electroanalytical Chemistry and Interfacial Electrochemistry | pt_BR |
| dc.source | http://dx.doi.org/10.1016/S0022-0728(77)80175-7 | pt_BR |
| dc.title | Dissociation and solubility variation versus pO2- of scheelite CaWO4 in molten NaCl−KCl (At 1000 K) | pt_BR |
| dc.title.alternative | Journal of Electroanalytical Chemistry and Interfacial Electrochemistry | pt_BR |
| dc.type | Artigo de Periódico | pt_BR |
| dc.description.localpub | Salvador | pt_BR |
| dc.identifier.number | v. 83, n. 2 | pt_BR |
| Aparece nas coleções: | Artigo Publicado em Periódico (Química)
|
