EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXAN

The protonation constants values of mercaptosuccinic acid were determined in propylene glycol- and dioxan-water mixtures (0-60% v/v) at 303.0 K at an ionic strength of 0.16 M using pH-metric technique. The protonation constants were calculated with the computer program MINIQUAD75 and selection of th...

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Autores principales:	TIRFU ZEKARIAS,MEKONEN, NAGESWARA RAO,GOLLAPALLI
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2012
Materias:	Mercaptosuccinic acid propylene glycol dioxan protonation constant dielectric constant
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100021
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spelling	oai:scielo:S0717-970720120001000212012-07-19EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXANTIRFU ZEKARIAS,MEKONENNAGESWARA RAO,GOLLAPALLI Mercaptosuccinic acid propylene glycol dioxan protonation constant dielectric constant The protonation constants values of mercaptosuccinic acid were determined in propylene glycol- and dioxan-water mixtures (0-60% v/v) at 303.0 K at an ionic strength of 0.16 M using pH-metric technique. The protonation constants were calculated with the computer program MINIQUAD75 and selection of the best fit chemical models was based on the statistical parameters. The log K values were found to increase with increase of the organic solvent content. The linear variations of the protonation constants with the reciprocal of the dielectric constant of the medium have been attributed to the dominance of electrostatic forces. Distribution of species, protonation equilibria and effect of influential parameters on the protonation constants have also been presented.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.57 n.1 20122012-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100021en10.4067/S0717-97072012000100021
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Mercaptosuccinic acid propylene glycol dioxan protonation constant dielectric constant
spellingShingle	Mercaptosuccinic acid propylene glycol dioxan protonation constant dielectric constant TIRFU ZEKARIAS,MEKONEN NAGESWARA RAO,GOLLAPALLI EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXAN
description	The protonation constants values of mercaptosuccinic acid were determined in propylene glycol- and dioxan-water mixtures (0-60% v/v) at 303.0 K at an ionic strength of 0.16 M using pH-metric technique. The protonation constants were calculated with the computer program MINIQUAD75 and selection of the best fit chemical models was based on the statistical parameters. The log K values were found to increase with increase of the organic solvent content. The linear variations of the protonation constants with the reciprocal of the dielectric constant of the medium have been attributed to the dominance of electrostatic forces. Distribution of species, protonation equilibria and effect of influential parameters on the protonation constants have also been presented.
author	TIRFU ZEKARIAS,MEKONEN NAGESWARA RAO,GOLLAPALLI
author_facet	TIRFU ZEKARIAS,MEKONEN NAGESWARA RAO,GOLLAPALLI
author_sort	TIRFU ZEKARIAS,MEKONEN
title	EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXAN
title_short	EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXAN
title_full	EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXAN
title_fullStr	EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXAN
title_full_unstemmed	EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXAN
title_sort	evaluation of protonation constants of mercaptosuccinic acid in aqueous solutions of propylene glycol and dioxan
publisher	Sociedad Chilena de Química
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100021
work_keys_str_mv	AT tirfuzekariasmekonen evaluationofprotonationconstantsofmercaptosuccinicacidinaqueoussolutionsofpropyleneglycolanddioxan AT nageswararaogollapalli evaluationofprotonationconstantsofmercaptosuccinicacidinaqueoussolutionsofpropyleneglycolanddioxan
_version_	1718445462023831552

EVALUATION OF PROTONATION CONSTANTS OF MERCAPTOSUCCINIC ACID IN AQUEOUS SOLUTIONS OF PROPYLENE GLYCOL AND DIOXAN

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