Acidity functions in 20% ethanol-80% aqueous sulfuric acid

1972 ◽  
Vol 94 (23) ◽  
pp. 8192-8197 ◽  
Author(s):  
A. J. Kresge ◽  
H. J. Chen
Keyword(s):  
Sulfuric Acid ◽  
Aqueous Sulfuric Acid ◽  
Acidity Functions

scholarly journals RATE ENHANCEMENTS DUE TO AQUEOUS SULFURIC ACID IN Mn (III) OXIDATION OF CERTAIN PURINE ALKALOIDS - KINETIC ANALYSIS OF ACIDITY FUNCTIONS

2021 ◽  
Vol 14 (03) ◽  
Author(s):  
A. Ramakrishna Reddy ◽  
J. Prasad ◽  
M. Bhooshan ◽  
K. C. Rajanna ◽  
A. Panasa Reddy ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Kinetic Analysis ◽  
Aqueous Sulfuric Acid ◽  
Purine Alkaloids ◽  
Acidity Functions

Acidity Dependence of the Tautomeric Equilibrium Between the First Conjugated Acids of 4-Aminoazobenzenes

1979 ◽  
Vol 32 (1) ◽  
pp. 41 ◽  
Author(s):  
S Yamamoto ◽  
Y Tenno ◽  
N Nishimura
Keyword(s):  
Sulfuric Acid ◽  
Tautomeric Equilibrium ◽  
Acid Solutions ◽  
Substituted Anilines ◽  
Aqueous Sulfuric Acid ◽  
Acidity Functions ◽  
Sulfuric Acid Solutions

Acidity functions based upon primary anilines which have no ortho substituents have been established in 20% ethanol-80% aqueous sulfuric acid solutions, and compared with those based upon o-substituted anilines and azobenzenes. It was found that the tautomeric equilibrium between azonium and anilinium forms in 4-aminoazobenzene derivatives invariably shifts to the azonium form with increase in acidity. This observation has been interpreted in terms of acidity functions.

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.

Electrochemistry of Gold in Aqueous Sulfuric Acid Solutions under Neural Stimulation Conditions

2005 ◽  
Vol 152 (7) ◽  
pp. E212 ◽  
Author(s):  
Daniel R. Merrill ◽  
Ionel C. Stefan ◽  
Daniel A. Scherson ◽  
J. Thomas Mortimer
Keyword(s):  
Sulfuric Acid ◽  
Neural Stimulation ◽  
Acid Solutions ◽  
Aqueous Sulfuric Acid ◽  
Sulfuric Acid Solutions
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