Activity Coefficient Ratios of Mixed Electrolytes in Aqueous Solutions at 25°. I. Sulfuric Acid and Cupric Sulfate. II. Perchloric Acid and Cupric Perchlorate

1955 ◽  
Vol 77 (22) ◽  
pp. 5833-5835
Author(s):  
V. F. Holland ◽  
O. D. Bonner
Keyword(s):  
Sulfuric Acid ◽  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Perchloric Acid ◽  
Mixed Electrolytes ◽  
Cupric Sulfate

Solubility of p-dimethylaminobenzaldehyde in aqueous solutions of HCl and H2SO4 at 25.00 °C

1967 ◽  
Vol 45 (22) ◽  
pp. 2805-2812
Author(s):  
Donald S. Gamble
Keyword(s):  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Equilibrium Constants ◽  
Amino Group ◽  
Mixed Electrolytes ◽  
Acid Solutions ◽  
Dimethylamino Group ◽  
Tertiary Amino

The solubility of p-dimethylaminobenzaldehyde (DABH) in aqueous HCl and aqueous H2SO4 solutions has been measured at 25.00 °C. The concentration ranges of HCl and H2SO4 were 0.01 m to 1 m, and 0.005 m to 0.5 m respectively. The equilibrium constants for solubility in H2O and for protonation of the dimethylamino group are 0.604 × 10−2 m (±0.5%) and 43. m−1 (±2.4%) respectively. Sufficiently concentrated acid solutions of this aldehyde are treated as mixed electrolytes owing to the extensive protonation of the tertiary amino group. Cation molal activity coefficient ratios (γdabh/γh+) for the tertiary ammonium and H+ ions have been calculated.

Characteristics of Sonoluminescing Bubbles in Aqueous Solutions of Sulfuric Acid

2006 ◽  
Vol 75 (11) ◽  
pp. 114705 ◽  
Author(s):  
Ki Young Kim ◽  
Ki-Taek Byun ◽  
Ho-Young Kwak
Keyword(s):  
Sulfuric Acid ◽  
Aqueous Solutions

Research on Thermodynamic Properties of Bioleaching Solution in Lean Nickel-Cobalt Ore by Pitzer - Meissner Model

2015 ◽  
Vol 1092-1093 ◽  
pp. 1455-1459
Author(s):  
Chu Yue Hou ◽  
Gui Ying Zhou ◽  
Jian Kang Wen ◽  
Biao Wu
Keyword(s):  
Thermodynamic Properties ◽  
Activity Coefficient ◽  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Pitzer Model ◽  
Foreign Ions ◽  
Nickel Cobalt

In this paper, we jointly use the Pitzer model and the Meissner model to study thermodynamic laws of bioleaching solution in a lean nickel-cobalt ore in the Jilin Baishan, by using the Pitzer model to calculate activity coefficients of single electrolyte aqueous solutions and the Meissner model to calculate activity coefficients of components in the bioleaching solution. Also we studied the rules of activity coefficient of NiSO4 and CoSO4 in the solution. Results show that when separating and purifying foreign ions from bioleaching solution of the lean nickel-cobalt ore, the descending sequence of their ion concentration’s effect over the solution is Mg2+, Fe3+, Fe2+, Ni2+, Co2+ and Ca2+.

ChemInform Abstract: Gas-Phase Deprotonation Energies of Sulfuric Acid, Perchloric Acid, Chlorosulfuric Acid and Fluorosulfuric Acid

ChemInform ◽  
2010 ◽  
Vol 29 (8) ◽  
pp. no-no
Author(s):  
A. H. OTTO ◽  
S. SCHRADER ◽  
T. STEIGER ◽  
M. SCHNEIDER
Keyword(s):  
Sulfuric Acid ◽  
Gas Phase ◽  
Perchloric Acid

Salts of Sulfated Oleic Acid Amides as Acid Corrosion Inhibitors

2021 ◽  
Vol 625 (3) ◽  
pp. 36-38
Author(s):  
E. K. Aminova ◽  
◽  
V. V. Fomina ◽  
Keyword(s):  
Oleic Acid ◽  
Sulfuric Acid ◽  
Hydrochloric Acid ◽  
Aqueous Solutions ◽  
Carboxylic Acids ◽  
Ammonium Salt ◽  
Dilute Hydrochloric Acid ◽  
Corrosion Inhibitors ◽  
Acid Corrosion ◽  
Protective Ability

This work is a continuation in a series of studies on the preparation of acid corrosion inhibitors based on carboxylic acids. A method of synthesis of acid corrosion inhibitors based on oleic acid amides has been developed. Several syntheses have been carried out to increase its inhibitory properties. The substances were obtained in several stages. At the first stage, amino alcohols were added to the ОA, then the resulting compounds were sulfonated with sulfuric acid. To expand the field of various inhibitors, reactions with bases are produced. As a result, salts of sulfated amides of oleic acid synthesized with amino nitrates, sulfuric acid and aqueous solutions of bases were formed. To establish the effectiveness of the compounds obtained, the protective ability in dilute hydrochloric acid was evaluated. It is established that some of the obtained substances exhibit the corresponding properties of inhibitors. In this case, the most effective is the ammonium salt of sulfated diethanolamide oleic acid.

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