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Determination of Dissociation Constants and Thermodynamic Parameters of 8-Aminoquinoline by Potentiometry in Aqueous and Mixed Organic-Water Solvent Systems

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dc.contributor.author HAFIZ A. BARI INDHAR
dc.contributor.author A. W. K. KHANZADA
dc.date.accessioned 2023-08-28T09:45:20Z
dc.date.available 2023-08-28T09:45:20Z
dc.date.issued 2000-03-01
dc.identifier.citation Bari Indhar, H. A., & Khanzada, A. W. K. (2000). Determination of dissociation constants and thermodynamic parameters of 8-aminoquinoline by potentiometry in aqueous and mixed organic-water solvent systems. Journal of the Chemical Society of Pakistan, 22, 1-5. en_US
dc.identifier.issn 0253-5106
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/19564
dc.description.abstract The dissociation constant (pKa) and thermodynamic parameters (△G) of 8-­aminoquinoline are determined in aqueous and in mixed organic-water (dioxane, EtOH and MeOH) solvent systems. It is observed that ionization constant of 8-aminoquinoline in aqueous system increases with the increase of temperature. The curve is a parabolic one. It is to be noted that pKa values of this compound are lower than those of quinoline and some of its amino derivatives. For mixed organic-water solvent systems pKa M and pKaT values versus percent composition decrease slowly with increase in percent of EtOH, MeOH and dioxane. The curve of the pK. versus percent composition is a distorted parabola.The data have been obtained potentiometrically by titrating aqueous 8-aminoquinoline solution with hydrochloric acid. The values of dissociation constant were obtained from these data by a computer program written in GW-BASIC. From pKa values Gibb's free energies (△G) have also been calculated. en_US
dc.description.sponsorship The chemical society of Pakistan is an approved society from the PSF en_US
dc.language.iso en en_US
dc.publisher The Chemical Society Of Pakistan en_US
dc.title Determination of Dissociation Constants and Thermodynamic Parameters of 8-Aminoquinoline by Potentiometry in Aqueous and Mixed Organic-Water Solvent Systems en_US
dc.type Article en_US


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