Abstract
This work is concerned with the study of acid-base reactions and of complex formation in ethanolamine and its mixtures with water. The ionic product of the solvent has been determined by an electro-chemical study of the H{sup +}/H{sub 2} system. The reduction curves for ethanolamine-water mixtures, for different acidities, have made it possible to follow the variations in the size of the pH domain as a function of the composition of the solvent. The form of this variation has been explained on the basis of the dielectric constant and the solvation of the proton by the ethanolamine. In the second part, the electrochemical systems of mercury have been studied by anodic polarography. In order to establish a parallel between the acid-base reactions and complex formation reactions, we have studied the stability of Hg (CN){sub 2} in water-ethanolamine mixtures. It has been possible to deduce the law for the variation of pK{sub c} with solvent composition. The representative graph of this function passes through a minimum for a proportion of about 50 per cent of ethanolamine as in the case of acids. This variation has been explained by the predominating influence of {epsilon} for ethanolamine propositions of over 50 per cent
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Grall, M
[1]
- Commissariat a l'Energie Atomique, Fontenay-aux-Roses (France). Centre d'Etudes Nucleaires
Citation Formats
Grall, M.
Electrochemical study of chemical properties in ethanolamine and its mixtures with water; Etude electrochimique de proprietes chimiques dans l'ethanolamine et ses melanges avec l'eau.
France: N. p.,
1964.
Web.
Grall, M.
Electrochemical study of chemical properties in ethanolamine and its mixtures with water; Etude electrochimique de proprietes chimiques dans l'ethanolamine et ses melanges avec l'eau.
France.
Grall, M.
1964.
"Electrochemical study of chemical properties in ethanolamine and its mixtures with water; Etude electrochimique de proprietes chimiques dans l'ethanolamine et ses melanges avec l'eau."
France.
@misc{etde_20621946,
title = {Electrochemical study of chemical properties in ethanolamine and its mixtures with water; Etude electrochimique de proprietes chimiques dans l'ethanolamine et ses melanges avec l'eau}
author = {Grall, M}
abstractNote = {This work is concerned with the study of acid-base reactions and of complex formation in ethanolamine and its mixtures with water. The ionic product of the solvent has been determined by an electro-chemical study of the H{sup +}/H{sub 2} system. The reduction curves for ethanolamine-water mixtures, for different acidities, have made it possible to follow the variations in the size of the pH domain as a function of the composition of the solvent. The form of this variation has been explained on the basis of the dielectric constant and the solvation of the proton by the ethanolamine. In the second part, the electrochemical systems of mercury have been studied by anodic polarography. In order to establish a parallel between the acid-base reactions and complex formation reactions, we have studied the stability of Hg (CN){sub 2} in water-ethanolamine mixtures. It has been possible to deduce the law for the variation of pK{sub c} with solvent composition. The representative graph of this function passes through a minimum for a proportion of about 50 per cent of ethanolamine as in the case of acids. This variation has been explained by the predominating influence of {epsilon} for ethanolamine propositions of over 50 per cent and by that of the solvation of Hg{sup 2+} for proportions of under 50 per cent. (author) [French] Ce travail porte sur l'etude des reactions acides-bases et de formation de complexes dans l'ethanolamine et ses melanges avec l'eau. Le produit ionique du solvant a pu etre determine par l'etude electro-chimique du systeme H{sup +}/H{sub 2}. Les courbes de reduction des melanges ethanolamine-eau, pour des acidites variables, ont permis de suivre les variations de l'etendue du domaine de pH, en fonction de la composition du solvant. L'allure de cette variation a ete expliquee en faisant intervenir la constante dielectrique et la solvatation du proton par l'ethanolamine. Dans une deuxieme partie, les systemes electrochimiques du mercure ont ete etudies par polarographie anodique. Pour etablir un parallele entre les reactions acides-bases et les reactions de formation de complexes, nous avons etudie la stabilite de Hg (CN){sub 2} dans les melanges eau + ethanolamine. On a pu etablir la loi de variation de pK{sub c} en fonction de la composition du solvant. La courbe representative de cette fonction passe par un minimum pour une proportion de l'ordre de 50 pour cent d'ethanolamine, comme dans le cas des acides. Cette variation a ete expliquee par l'influence preponderante de {epsilon} pour des proportions d'ethanolamine superieures a 50 pour cent et par celle de la solvatation de Hg{sup 2+} pour des proportions inferieures a 50 pour cent. (auteur)}
place = {France}
year = {1964}
month = {Dec}
}
title = {Electrochemical study of chemical properties in ethanolamine and its mixtures with water; Etude electrochimique de proprietes chimiques dans l'ethanolamine et ses melanges avec l'eau}
author = {Grall, M}
abstractNote = {This work is concerned with the study of acid-base reactions and of complex formation in ethanolamine and its mixtures with water. The ionic product of the solvent has been determined by an electro-chemical study of the H{sup +}/H{sub 2} system. The reduction curves for ethanolamine-water mixtures, for different acidities, have made it possible to follow the variations in the size of the pH domain as a function of the composition of the solvent. The form of this variation has been explained on the basis of the dielectric constant and the solvation of the proton by the ethanolamine. In the second part, the electrochemical systems of mercury have been studied by anodic polarography. In order to establish a parallel between the acid-base reactions and complex formation reactions, we have studied the stability of Hg (CN){sub 2} in water-ethanolamine mixtures. It has been possible to deduce the law for the variation of pK{sub c} with solvent composition. The representative graph of this function passes through a minimum for a proportion of about 50 per cent of ethanolamine as in the case of acids. This variation has been explained by the predominating influence of {epsilon} for ethanolamine propositions of over 50 per cent and by that of the solvation of Hg{sup 2+} for proportions of under 50 per cent. (author) [French] Ce travail porte sur l'etude des reactions acides-bases et de formation de complexes dans l'ethanolamine et ses melanges avec l'eau. Le produit ionique du solvant a pu etre determine par l'etude electro-chimique du systeme H{sup +}/H{sub 2}. Les courbes de reduction des melanges ethanolamine-eau, pour des acidites variables, ont permis de suivre les variations de l'etendue du domaine de pH, en fonction de la composition du solvant. L'allure de cette variation a ete expliquee en faisant intervenir la constante dielectrique et la solvatation du proton par l'ethanolamine. Dans une deuxieme partie, les systemes electrochimiques du mercure ont ete etudies par polarographie anodique. Pour etablir un parallele entre les reactions acides-bases et les reactions de formation de complexes, nous avons etudie la stabilite de Hg (CN){sub 2} dans les melanges eau + ethanolamine. On a pu etablir la loi de variation de pK{sub c} en fonction de la composition du solvant. La courbe representative de cette fonction passe par un minimum pour une proportion de l'ordre de 50 pour cent d'ethanolamine, comme dans le cas des acides. Cette variation a ete expliquee par l'influence preponderante de {epsilon} pour des proportions d'ethanolamine superieures a 50 pour cent et par celle de la solvatation de Hg{sup 2+} pour des proportions inferieures a 50 pour cent. (auteur)}
place = {France}
year = {1964}
month = {Dec}
}