Thermodynamics of ion pairing in lead nitrate solutions as determined with 207Pb NMR spectroscopy

被引：12

作者：

Altounian, N ^{[1
]}

Glatfelter, A ^{[1
]}

Bai, S ^{[1
]}

Dybowski, C ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2000年 / 104卷 / 19期

关键词：

D O I：

10.1021/jp000130u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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+(aq) = 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).

引用

页码：4723 / 4725

页数：3

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