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  • 标题:Dissociation, Association and Solvation Parameters for Saturated Glycine in Various Solvents at 298.15 K
  • 本地全文:下载
  • 作者:Esam A. Gomaa ; Esam A. Gomaa
  • 期刊名称:Science and Technology
  • 印刷版ISSN:2163-2669
  • 电子版ISSN:2163-2677
  • 出版年度:2013
  • 卷号:3
  • 期号:4
  • 页码:123-126
  • DOI:10.5923/j.scit.20130304.05
  • 语种:English
  • 出版社:Scientific & Academic Publishing Co.
  • 摘要:The molal solubility for saturated solutions of glycine at 298.15 K in various solvents was determined. The solvents used are, water (W), dimethylsulphoxide (DMSO), ethanol (Et), 1-4, dioxane (Di), acetonitrile (AN), N,N-dimethylformamide (DMF),acetone (Ac) and methanol (Me) . From the experimental data for solubility, pH and densities. the different volumes, free energies, dissociation constants, association constants and solvation parameters were estimated. The different types of volumes for glycine in different solvents like molar volume, Van der Waals and electrostriction volumes were evaluated. Also the solvation numbers were also cited for glycine in the used solvents. All the solubility parameters estimated explain the different ion solvent and ion ion interactions to help any analyst to analyse glycine. Different association, dissociation parameters were calculated using model explained before by us concentrating glycine zwitter ion has effective hydrogen atom. The results were also discussed.
  • 关键词:Solubility; Association Constant; Dissociation Constant; Free Energies; Organic Solvents; Densities; Different Volumes; Glycine
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