Author:
Fujiwara Kenso,Yamana Hajimu,Fujii Toshiyuki,Kawamoto Kozo,Sasaki Takayuki,Moriyama Hirotake
Abstract
SummaryThe solubility of uranium(IV) hydrous oxide was measured at 25 °C in NaClO4solution containing Na2S2O4as a reducing agent in the pH range from 12 to 14. The experiment was carried out from oversaturation atI= 0.5, 1.0 and 2.0 mol/dm3(M). The solubility data were analyzed to obtain the hydrolysis constants (βm) of U(OH)m(4-m). By taking the specific ion interaction theory (SIT) for ionic strength corrections and by using the solubility product logKsp° = −53.93 ± 0.20, the hydrolysis constants atI= 0, log β5°<48.10 and log β6° = 48.95 ± 1.01, were determined together with the ion interaction coefficients of U(OH)5−and U(OH)62−.
Subject
Physical and Theoretical Chemistry
Cited by
14 articles.
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