Polyelectrolyte complex formation between iota-carrageenan and poly(l-lysine) in dilute aqueous solutions: a spectroscopic and conformational study

2004 ◽  
Vol 55 (1) ◽  
pp. 37-45 ◽  
Author(s):  
S. Girod ◽  
M. Boissière ◽  
K. Longchambon ◽  
S. Begu ◽  
C. Tourne-Pétheil ◽  
...  
Keyword(s):  
Complex Formation ◽  
Aqueous Solutions ◽  
Polyelectrolyte Complex ◽  
Conformational Study ◽  
Dilute Aqueous Solutions

Thermodynamics of Lead(II) Halide Complex Formation in Calcium Nitrate Tetrahydrate -Acetamide Melts

2001 ◽  
Vol 56 (12) ◽  
pp. 832-836 ◽  
Author(s):  
S. B. Gadzuric ◽  
I. J. Zsigrai ◽  
R. M. Nikolic
Keyword(s):  
Complex Formation ◽  
Aqueous Solutions ◽  
Calcium Nitrate ◽  
Formation Constants ◽  
Calcium Nitrate Tetrahydrate ◽  
Salt Melts ◽  
Nitrate Tetrahydrate ◽  
Different Temperatures ◽  
Dilute Aqueous Solutions ◽  
Melt Composition

Abstract The complex formation between lead(II) ions and chloride and bromide ions in melts of C a(N 03) 2 • 4 H2O • αCH3CONH2 has been studied at different temperatures between 30 and 70 °C. The formation constants of the complexes PbX+ and PbX2 (X = Cl, Br) were determined from em f measurements by means of Ag/AgX electrodes. The dependence of the formation constants for PbCl+ on the solvent melt composition has been analysed. The thermodynamic parameters ΔH011 and ΔS011 for PbX+ complex formation have been estimated. The parameters are compared with the literature data for the same process in dilute aqueous solutions and in some hydrated and anhydrous salt melts.

Fluorescence observations on complex formation between linear and hyperbranched polyelectrolytes in dilute aqueous solutions

2005 ◽  
Vol 41 (1) ◽  
pp. 185-191 ◽  
Author(s):  
Chaoyang Wang ◽  
Biye Ren ◽  
Zhen Tong ◽  
Fang Zeng ◽  
Xinxing Liu ◽  
...  
Keyword(s):  
Complex Formation ◽  
Aqueous Solutions ◽  
Dilute Aqueous Solutions

The reactions of oligoalcohols with arsenic, arsenous, boric and germanic acids

1980 ◽  
Vol 45 (10) ◽  
pp. 2645-2655 ◽  
Author(s):  
Antonín Mikan ◽  
Miloš Bartušek
Keyword(s):  
Aqueous Solutions ◽  
Equilibrium Constants ◽  
Dilute Aqueous Solutions

The reactions of sorbitol, mannitol, adonitol, dulcitol, glucose and glycerol with H3AsO4, H3AsO3, H3BO3 and GeO2 acids in dilute aqueous solutions were studied by potentiometric neutralization titrations. The formation of the following chelates was demonstrated: As(V)L3-, As(III)L(OH)2-, HAs(III)L(OH)2, BL2-, GeL2(OH)- and GeL32- and the equilibrium constants for their formation were found. Conditions for formation of these chelates of organic oligohydroxy compounds are discussed.

Study of potential oscillations during reaction of an aluminium single crystal with an aqueous KOH solution

1990 ◽  
Vol 55 (2) ◽  
pp. 345-353 ◽  
Author(s):  
Ivan Halaša ◽  
Milica Miadoková
Keyword(s):  
Aqueous Solutions ◽  
Single Crystal ◽  
Single Crystals ◽  
Periodic Potential ◽  
Optimum Conditions ◽  
Potential Oscillations ◽  
Dilute Aqueous Solutions ◽  
Experimental Findings ◽  
Kinetics Of

The authors investigated periodic potential changes measured on oriented sections of Al single crystals during spontaneous dissolution in dilute aqueous solutions of KOH, with the aim to find optimum conditions for the formation of potential oscillations. It was found that this phenomenon is related with the kinetics of the reaction investigated, whose rate also changed periodically. The mechanism of the oscillations is discussed in view of the experimental findings.

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