Thermodynamic parameters of solvation of nonelectrolytes in aqueous solutions of amides of carboxylic acids

2008 ◽  
Vol 49 (4) ◽  
pp. 688-695 ◽  
Author(s):  
A. M. Zaichikov ◽  
M. A. Krest’yaninov
Keyword(s):  
Aqueous Solutions ◽  
Thermodynamic Parameters ◽  
Carboxylic Acids ◽  
Amides Of Carboxylic Acids

Thermodynamic parameters for the protonation of carboxylic acids in aqueous tetraethylammonium iodide solutions

1990 ◽  
Vol 19 (6) ◽  
pp. 569-587 ◽  
Author(s):  
Alessandro De Robertis ◽  
Concetta De Stefano ◽  
Carmelo Rigano ◽  
Silvio Sammartano
Keyword(s):  
Thermodynamic Parameters ◽  
Carboxylic Acids ◽  
Tetraethylammonium Iodide

Synthesis of phosphorus-substituted amides of carboxylic acids containing 2,6-di-tert-butylphenol fragments

2009 ◽  
Vol 79 (1) ◽  
pp. 152-154
Author(s):  
A. A. Prishchenko ◽  
M. V. Livantsov ◽  
O. P. Novikova ◽  
L. I. Livantsova ◽  
E. R. Milayeva
Keyword(s):  
Carboxylic Acids ◽  
Amides Of Carboxylic Acids

scholarly journals Physico-Chemical Investigations in the Amide Group

1906 ◽  
Vol 25 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Charles E. Fawsitt
Keyword(s):  
Aqueous Solutions ◽  
Carboxylic Acids ◽  
Amide Group ◽  
Chemical Dynamics ◽  
Physico Chemical ◽  
Other Substances ◽  
The Subject

Some time ago, while studying the chemical dynamics of the changes which occur in solutions of urea or carbamide, I came upon some rather unexpected results which led me to hope that investigations conducted on somewhat the same lines with other substances of the amide group might prove to yield results of some interest. The amides referred to are those derived from carboxylic acids. While proceeding to this investigation I noticed some measurements, obtained in connection with the viscosity of aqueous solutions of carbamide, which appeared of sufficient interest to demand an inquiry into the nature of solutions of this class of substances before proceeding further with the subject of inquiry in the manner at first intended.

scholarly journals Study on Adsorption of Cu and Ba from Aqueous Solutions Using Nanoparticles of Origanum (OR) and Lavandula (LV)

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Ghadah M. Al-Senani ◽  
Foziah F. Al-Fawzan
Keyword(s):  
Heavy Metals ◽  
Particle Size ◽  
Free Energy ◽  
Aqueous Solutions ◽  
Thermodynamic Parameters ◽  
Solution Ph ◽  
Environment Friendly ◽  
Removal Of Heavy Metals ◽  
Equilibrium Data ◽  
Langmuir And Freundlich Models

Wild herbs (Origanum (OR) and Lavandula (LV)) were used as environment-friendly adsorbents in this study. The adsorbents were used for adsorption of Cu and Ba from water. The adsorption of heavy metals onto OR and LV was dependent on particle size, dose, and solution pH. The diameter of adsorbent particles was less than 282.8 nm. The adsorption follows second-order kinetics. Langmuir and Freundlich models have been applied to describe the equilibrium data, and the thermodynamic parameters, the Gibbs free energy, ∆G°, enthalpy, ∆H°, and entropy, ∆S°, have been determined. The positive value of ∆H° suggests that the adsorption of heavy metals by the wild herbs is endothermic. The negative values of ∆G° at all the studied temperatures indicate that the adsorption is a spontaneous process. It can be concluded that OR and LV are promising adsorbents for the removal of heavy metals from aqueous solutions over a range of concentrations.

scholarly journals Adsorption Studies of Aqueous Solutions of Methyl Green for Halloysite Nanotubes: Kinetics, Isotherms, and Thermodynamic Parameters

2021 ◽  
Vol 9 (1) ◽  
pp. 1-11
Author(s):  
Y. M. Vargas-Rodríguez ◽  
A. Obaya ◽  
J. E. García-Petronilo ◽  
G. I. Vargas-Rodríguez ◽  
A. Gómez-Cortés ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Thermodynamic Parameters ◽  
Halloysite Nanotubes ◽  
Methyl Green ◽  
Adsorption Studies
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