SOLUBILITY OF ND(OH)(3)(C) IN 0.1 M NACL AQUEOUS-SOLUTION AT 25-DEGREES-C AND 90-DEGREES-C

Authors
RAO LF RAI D FELMY AR
Citation
Lf. Rao et al., SOLUBILITY OF ND(OH)(3)(C) IN 0.1 M NACL AQUEOUS-SOLUTION AT 25-DEGREES-C AND 90-DEGREES-C, Radiochimica Acta, 72(3), 1996, pp. 151-155
Citations number
19
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Inorganic & Nuclear
Journal title
Radiochimica Acta → ACNP
ISSN journal
00338230
Volume
72
Issue
3
Year of publication
1996
Pages
151 - 155
Database
ISI
SICI code
0033-8230(1996)72:3<151:SONI0M>2.0.ZU;2-A
Abstract
The solubility of crystalline Nd(OH)(3)(c) was studied in 0.1 M NaCl o ver a pH range from 5 to 9 at both 25 and 90 degrees C. It was observe d that at the same pH, the solubilities of Nd(OH)(3) at 25 and 90 degr ees C were very similar. A thermodynamic model, based on Pitzer's spec ific ion-interaction approach, was used to interpret the solubility da ta. The logarithm of the equilibrium constant for the dissolution reac tion, Nd(OH)(3)(c) + 3 H+ = Nd3+ + 3 H2O, was calculated to be 14.96 a t 25 degrees C and 14.18 at 90 degrees C, respectively.