Features of the Ionic State of Indium in Perchlorate Solutions and the Physicochemical Properties of Indium Perchlorate

Mapping Intimacies ◽

10.5772/intechopen.94258 ◽

2020 ◽

Author(s):

Radionov Boris Konstantinovich ◽

Svirsky Ilya Anatolievich

Keyword(s):

Electrical Conductivity ◽

Ionic Strength ◽

Hydrochloric Acid ◽

Ir Spectroscopy ◽

Physicochemical Properties ◽

Aqueous Solutions ◽

Perchloric Acid ◽

Mixed Ligand ◽

Ionic State ◽

Structure Of Aqueous Solutions

The possibility of the formation of India perchlorate and mixed ligand complexes has been studied. It is assumed that during the extraction of indium in aqueous solutions of hydrochloric acid at various concentrations and constant ionic strength maintained by the addition of perchloric acid, indium is present in the organic phase in the form of ionic aggregates HClO4 · HInCl4. To study the hydration of Ions, the method of electrical conductivity was carried out in the “In(ClO4)3 - HClO4 - H2O” system. The structure of aqueous solutions of India perchlorates was determined by IR spectroscopy. The structures of trivalent perchlorate India have been established.

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Electromotive force studies in aqueous solutions at elevated temperatures. XV. Thermodynamic properties of aqueous hydrochloric acid-lanthanum chloride solutions to ionic strength 5.0

Journal of Chemical & Engineering Data ◽

10.1021/je60055a020 ◽

1972 ◽

Vol 17 (4) ◽

pp. 459-461 ◽

Cited By ~ 3

Author(s):

Milton H. Lietzke ◽

Merlin D. Danford

Keyword(s):

Ionic Strength ◽

Hydrochloric Acid ◽

Thermodynamic Properties ◽

Aqueous Solutions ◽

Electromotive Force ◽

Elevated Temperatures ◽

Lanthanum Chloride ◽

Chloride Solutions ◽

Aqueous Hydrochloric Acid

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KINETICS OF THE OXIDATION OF URANIUM (IV) BY IRON (III) IN AQUEOUS SOLUTIONS OF PERCHLORIC ACID

Canadian Journal of Chemistry ◽

10.1139/v55-221 ◽

1955 ◽

Vol 33 (12) ◽

pp. 1780-1791 ◽

Cited By ~ 25

Author(s):

R. H. Betts

Keyword(s):

Electron Transfer ◽

Ionic Strength ◽

Aqueous Solutions ◽

Perchloric Acid ◽

Rate Constants ◽

Kcal Mole ◽

Kinetics Of Oxidation ◽

Temperature Coefficients ◽

Kinetics Of ◽

Rate Controlling Step

The kinetics of oxidation of uranium (IV) by iron (III) in aqueous solutions of perchloric acid have been investigated at four temperatures between 3.1 °C. and 24.8 °C. The reaction was followed by measurement of the amount of ferrous ion formed. For the conditions (H+) = 0.1–1.0 M, ionic strength = 1.02, (FeIII) = 10−4–10−5 M, and (UIV) = 10−4–10−5 M, the observed rate law is d(Fe2+)/dt = −2d(UIV)/dt[Formula: see text]K1 and K2 are the first hydrolysis constants for Fe3+ and U4+, respectively, and K′ and K″ are pseudo rate constants. At 24.8 °C., K′ = 2.98 sec.−1, and K″ = 10.6 mole liter−1 sec−1. The corresponding temperature coefficients are ΔH′ = 22.5 kcal./mole and ΔH″ = 24.2 kcal./mole. The kinetics of the process are consistent with a mechanism which involves, as a rate-controlling step, electron transfer between hydrolyzed ions.

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