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Equilibrium constant for calcium ion and ascorbate ion.

C S Tsao
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Abstract

The combination of calcium and ascorbic acid in water at 25 degrees C has been examined by measuring the change of free calcium ion concentration as ascorbate was added in small increment to a solution of calcium. The data show clearly that complex formation between calcium ion and ascorbate ion occurred. At ionic strength mu = 0.1-0.2, the equilibrium constant of Ca++ and the singly-charged ascorbate ion has been measured to be 2.1 M-1. The precision of the result is better than 5% and the accuracy is estimated to be better than 20%. The application of the equilibrium constants is discussed.

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Ascorbic AcidCalciumChemical PhenomenaChemistry, PhysicalMathematicsOsmolar ConcentrationJournal Article

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C S Tsao. 1984-02-15. Equilibrium constant for calcium ion and ascorbate ion.. https://doi.org/10.1007/bf01963581

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