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頁籤選單縮合
題 名 | Ion-Solvent Interaction of Biunivalent Electrolytes in Dioxane-Water Mixtures from Conductivity Data at Different Temperatures |
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作 者 | Bakr,Moustafa Farag; Abd Allah Abd El-Wahab Mohamed; | 書刊名 | Journal of the Chinese Chemical Society |
卷 期 | 46:6 1999.12[民88.12] |
頁 次 | 頁899-904 |
分類號 | 341.372 |
關鍵詞 | 離子溶劑; 電導; Ion-solvent interaction; Conductance; Walden product; |
語 文 | 英文(English) |
英文摘要 | This paper presents the conductivity measurements for some alkaline earth metal salts MgCl□, MgBr□, Mg(NO□)□, CaCl□, CaBr□ and Ca(NO□)□ by which the ion-solvent interactions are reported in the concentration range in dioxane-water mixtures at mass fraction of 0, 3, 10, 20 and 30% at 30°, 35°, 40℃ and 45 ℃ ±0.01. The conductance data were analyzed for the limiting molar conductivity, A□, by the Fuoss-Edelson conductivity equation for the 2:1 unsymmetrical electrolytes. The results were discussed in terms of the solute-solvent interaction from the temperature coefficient of Walden product, A□η of the electrolyte solutions. Moreover, A□η was found to exhibit a linear relationship with the dielectric constant, ε, of the dioxane-water mixtures. The study gives information regarding the ion-solvent interactions from the mobilities and Walden product of the ions in the solvent. The ions appear to interact appreciably and the ion-solvent interaction tends to increase in the order Ca> Mg for the same anion while for the anions, the trend decreases in the order Cl□ < Br□ < No□. |
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