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Younes G. Thermodynamic Studies of Dissociation Reactions of Some Dicarboxylic Acids in 20% (w/w) Acetonitrile - Water Mixture. JOURNAL OF CHEMICAL RESEARCH 2008. [DOI: 10.3184/030823408x338747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
p K1 and p K2 values at zero ionic strength of some dicarboxylic acids (succinic, tartaric, malonic, malic and maleic) in 20% (w/w) acetonitrile-water at temperatures ranging from 30 °C to 60 °C have been determined using a precise EMF method. The thermodynamic parameters Δ H°, Δ G° and Δ S° of the first and the second dissociation reactions are calculated from well known equations and discussed in terms of solute-solvent interactions. An extrathermodynamic analysis of the obtained results has been performed and indicates that these dissociation reactions are entropy-controlled reactions where solute-solvent interaction plays an important role.
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Affiliation(s)
- Ghassan Younes
- Beirut Arab University, Faculty of Science, Department of Chemistry, PO Box 11-5020, Riad El Solh, Beirut 1107 2809, Lebanon
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El-Naggar GA, Selim SM, Zaghloul AA, Amira MF. Thermodynamics of Dissolution of some Dicarboxylic Acids in Water/Ethane-1,2-Diol Mixtures. Z PHYS CHEM 2002. [DOI: 10.1524/zpch.2002.216.10.1239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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El-Bardan AA. Synthesis, Spectral Studies and C-S, C-N Bond Fissions of Some Novel N-[Alkyl (4′- Substituted Phenylthio)] Phthalimides. PHOSPHORUS SULFUR 1998. [DOI: 10.1080/10426509808545492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ali A. El-Bardan
- a Chemistry Department, Facutly of Science , Alexandria University , P.O. 426 Ibrahimia, Alexandria 21321, Egypt
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Hamed EA. Nucleophilic substitution at the pyridine ring. Kinetics of the reaction of 2-chloro-3,5-dinitropyridine with arylthiolates in methanol. INT J CHEM KINET 1997. [DOI: 10.1002/(sici)1097-4601(1997)29:7<515::aid-kin5>3.0.co;2-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Hamed EA, El-faham A, Saad EF, El-bardan AA. SYNTHESIS AND SPECTRAL STUDIES OF SOME ARYL SULFIDES AND SULFONES. PHOSPHORUS SULFUR 1996. [DOI: 10.1080/10426509608043461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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