Thermodynamics of extraction of MoO42− from aqueous sulfuric acid media with TBP dissolved in kerosene

2000 ◽  
Vol 55 (3) ◽  
pp. 327-341 ◽  
Author(s):  
E.Keshavarz Alamdari ◽  
S.K Sadrnezhaad
Keyword(s):  
Sulfuric Acid ◽  
Acid Media ◽  
Aqueous Sulfuric Acid

Thiohydantoins. VII. Ionization and ultraviolet spectra of 4-thiohydantoins and 2,4-dithiohydantoins

1969 ◽  
Vol 47 (7) ◽  
pp. 1117-1122 ◽  
Author(s):  
J. T. Edward ◽  
J. K. Liu
Keyword(s):  
Sulfuric Acid ◽  
Acid Solution ◽  
Dissociation Constants ◽  
Acid Media ◽  
Ultraviolet Spectra ◽  
Aqueous Sulfuric Acid ◽  
Different Types ◽  
Acid And Base ◽  
Methyl Derivatives ◽  
Acidity Functions

The acid and base dissociation constants of 5,5-pentamethylene-4-thiohydantoin, 5,5-pentamethylene-2,4-dithiohydantoin, and their 1-methyl derivatives, have been determined by ultraviolet studies in basic and acid media. In aqueous sulfuric acid the 4-thiohydantoins are protonated on oxygen at the 2-position, so that the extent of protonation varies with the HA function of the acid solution, while the 2,4-dithiohydantoins are protonated on sulfur at the 2-position, so that the extent of their protonation varies with H0′′′. The importance of using acidity functions appropriate to the different types of compounds when comparing their basicities is emphasized.

ChemInform Abstract: Mechanism of Reactions of Some N1-Substituted Biguanides with Chromium(VI) in Aqueous Sulfuric Acid Media.

ChemInform ◽  
1988 ◽  
Vol 19 (39) ◽  
Author(s):  
R. BANERJEE ◽  
A. BHATTACHARYA ◽  
P. K. DAS ◽  
A. K. CHAKRABURTTY
Keyword(s):  
Sulfuric Acid ◽  
Acid Media ◽  
Aqueous Sulfuric Acid ◽  
Chromium Vi
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