Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/98685
Type: Artigo de periódico
Title: Calorimetric Study Of The Interaction Of Tri- And Tetrametaphosphate With Some Trivalent Cations
Author: Gushikem Y.
Giesse R.
Volpe P.L.O.
Abstract: Tri- and tetrametaphosphate were used in calorimetric titrations of Al3+, Y3+, La3+ and [Co(NH3)6]3+ in aqueous solutions. The enthalpies of reaction and equilibrium constants were determined for the complexation reactions. In every case, the ion pair of metal to cyclic phosphate in a 1 : 1 proportion is the complex species. The thermodynamic data as calculated by the least-squares method range between 2.28 and 37.8 kJ mole-1 for the enthalpies, and 56 and 190 J K-1 mole-1 for the entropies. These thermodynamic data indicate that the stability of these complexes is mainly due to the gain in entropy. © 1983.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/0040-6031(83)80382-7
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0042241810&partnerID=40&md5=582d1240573178413730254d1a4343c0
Date Issue: 1983
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
2-s2.0-0042241810.pdf333.07 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.