K. Jawad, S., M. Muslim, N. (2015). Liquid Ion Exchange for Extraction and Spectrophotometric Determination of Tungestate WO4˭ by Use Azo-derivative. , 0(10), 8-20.
Shawket K. Jawad; Nadia M. Muslim. "Liquid Ion Exchange for Extraction and Spectrophotometric Determination of Tungestate WO4˭ by Use Azo-derivative". , 0, 10, 2015, 8-20.
K. Jawad, S., M. Muslim, N. (2015). 'Liquid Ion Exchange for Extraction and Spectrophotometric Determination of Tungestate WO4˭ by Use Azo-derivative', , 0(10), pp. 8-20.
K. Jawad, S., M. Muslim, N. Liquid Ion Exchange for Extraction and Spectrophotometric Determination of Tungestate WO4˭ by Use Azo-derivative. , 2015; 0(10): 8-20.

Liquid Ion Exchange for Extraction and Spectrophotometric Determination of Tungestate WO4˭ by Use Azo-derivative

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Article 1, Volume 0, Issue 10, 2015, Pages 8-20
Authors
Shawket K. Jawad; Nadia M. Muslim
Abstract
2-[(4–formylphenayl)azo]-4,5-diphenyl imidazole [FPADPI] used as complexation agent to form ion
association complex. pH=8, which is giving higher absorbance at λmax= 460nm , in presence of 50 µgW
6+
as
WO4˭in 5mL and 1×10
-4
M of [FPADPI], this study show ion pair complex extracted have a structure 1:1
H-FPADPI]
+
;HWO4
-
or [2H-FPADPI]
2+
;WO4˭, and thermodynamic study show extraction method of
WO4˭ was endothermic with thermodynamic data ∆Hex=0.0287 K J mol
-1
, ∆Gex=-50.83 K Jmol
-1
and
∆Sex= 167.857 J mol
-1
K
-1
as well as this research contain another studies.
Keywords
Liquid Ion Exchange; Extraction and Spectrophotometric
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