POTENTIOMETRIC AND SPECTROPHOTOMETRIC STUDY OF THE SOLUTION EQUILIBRIA IN THE NICKEL(II)-DIETHANOLAMINE-WATER SYSTEM IN AQUEOUS SODIUM-PERCHLORATE SOLUTIONS AT 25-DEGREES-C

Authors
LOPATEGI A CASTANO R ETXEBARRIA N MADARIAGA JM
Citation
A. Lopategi et al., POTENTIOMETRIC AND SPECTROPHOTOMETRIC STUDY OF THE SOLUTION EQUILIBRIA IN THE NICKEL(II)-DIETHANOLAMINE-WATER SYSTEM IN AQUEOUS SODIUM-PERCHLORATE SOLUTIONS AT 25-DEGREES-C, Journal of the Chemical Society. Dalton transactions, (23), 1995, pp. 3843-3848
Citations number
35
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Journal of the Chemical Society. Dalton transactions → ACNP
ISSN journal
03009246
Issue
23
Year of publication
1995
Pages
3843 - 3848
Database
ISI
SICI code
0300-9246(1995):23<3843:PASSOT>2.0.ZU;2-4
Abstract
The acid-base and complexation equilibria of the system nickel(ll)-die thanolamine-water have been studied using an automated potentiometric- spectrophotometric titration system at 25 degrees C and at four ionic strengths (0.5, 1.0, 2.0 and 3.0 mot dm(3)) in NaClO4 medium. The stoi chiometric stability constants, obtained at the different ionic streng ths, were correlated by means of the modified Bromley methodology and the corresponding thermodynamic constants were: log degrees beta(011) = 8.88 +/- 0.02, log degrees beta(110) = 2.57 +/- 0.02 and log degrees beta(120) = 4.42 +/- 0.05.