Thermodynamics of ion pairing in lead nitrate solutions as determined withPb-207 NMR spectroscopy

Authors
Altounian, N Glatfelter, A Bai, S Dybowski, C
Citation
N. Altounian et al., Thermodynamics of ion pairing in lead nitrate solutions as determined withPb-207 NMR spectroscopy, J PHYS CH B, 104(19), 2000, pp. 4723-4725
Citations number
9
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
15206106 → ACNP
Volume
104
Issue
19
Year of publication
2000
Pages
4723 - 4725
Database
ISI
SICI code
1520-6106(20000518)104:19<4723:TOIPIL>2.0.ZU;2-U
Abstract
The temperature and concentration variations in Pb-207 NMR shifts of Pb(NO3 )(2) in aqueous solutions are analyzed in terms of exchange between aquated lead ion and the Pb(NO3)(+) ion complex according to the reaction PbNO3+(a q) = Pb2+(aq) + NO3-(aq). The analysis gives an enthalpy of dissociation of -3.0 +/- 0.2 kcal mol(-1) and an entropy of dissociation of -11.9 +/- 0.4 cal K-1 mol(-1).