Electrical Conductance Studies in Aqueous Solutions with Ascorbate Ions |
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Authors: | Alexander Apelblat Emanuel Manzurola Zoya Orekhova |
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Affiliation: | (1) Department of Chemical Engineering, Ben Gurion University of Negev, Beer Sheva, 84105, Israel |
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Abstract: | Conductivity measurements in dilute aqueous solutions of L-ascorbic acid, sodium-L-ascorbate, magnesium-L-ascorbate, calcium-L-ascorbate and ferrous-L-ascorbate were performed in the (288.15 to 323.15) K temperature range. The limiting molar conductances of the ascorbic anion, λ∘(HAsc−, T), and the dissociation constants of ascorbic acid, K(T), were derived by the use of the Debye-Hückel equation for the activity coefficients and the Onsager and Quint and Viallard conductivity equations. |
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Keywords: | L-ascorbic acid Sodium-L-ascorbate Magnesium-L-ascorbate Calcium-L-ascorbate Ferrous ascorbate Limiting molar conductances Dissociation constants |
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