The effect of ionic strength on the complexation of copper (II) with salicylate ion

被引：0
|
作者：
Furia, E [1 ]
Porto, R [1 ]
机构：
[1] Univ Calabria, Dipartimento Chim, I-87036 Arcavacata Di Rende, CS, Italy
来源：
ANNALI DI CHIMICA | 2002年 / 92卷 / 5-6期
关键词：
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The complexation of Cu2+ with the hydrogen salicylate, HL-, ion has been studied, at 25degreesC, by potentiometric measurements with a glass electrode in NaClO4 media for an ionic strength range from 0.5 to 3 M. The complexes found were CuL, CuL22- and CuHL+. Stability constants, extrapolated to zero ionic strength by using the Specific Interaction Theory were: HL. + H+ reversible arrow H2L log K(12)degrees = 3.03 +/- 0.03 Cu2+ + HL. reversible arrow Cu L + H+ log beta(1)degrees = -2.37 +/- 0.05 Cu2+ + 2 HL. reversible arrow Cu L-2(2-) + 2 H+ logbeta(2)(o) = -8.35 +/- 0.05 Cu2+ + HL reversible arrow CuHL+ log K (CuHL)degrees = 1.8 +/- 0.2
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页码：521 / 530
页数：10
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