Abstract
The complexation reaction of magnesium and 3,5-dinitrosalicylic acid has been investigated by potentiometric method in aqueous 0.1 M KNO3 medium. The formation constants (log K) of the complex MgA predominating in the pH range 6 — 9 have been found to be 2.30, 2.425 and 2.65 at 25, 30, and 35°C respectively. The values of overall changes in ΔF, ΔH and ΔS accompanying the reaction have also been evaluated at 30°C and found to be —3.385 kcal/mole, —13.71 kcal/mole and —34.0 cal/degree respectively.
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