%0 Journal Article %T Determination of the Stability Constant of Vanadium (V) with Alaine %J Iranian Journal of Chemistry and Chemical Engineering %I Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR %Z 1021-9986 %A Abedini Khorrami, Saeed %A Gharib, Farrokh %A Zare, Karim %A Aghai, Hossein %D 1992 %\ 12/01/1992 %V 11 %N 2 %P 19-24 %! Determination of the Stability Constant of Vanadium (V) with Alaine %K Stability constant %K sodium meta vanadate %K Alanine %K Dioxy vanadium complexes %K Vanadium aminocarboxylates %R 10.30492/ijcce.1992.10956 %X Formation equilibria of dioxy vanadium (V) complex with alanine in acidic media (pH<2.3) has been investigated potentiometrically and spectrophotometrically. In this condition the 1:1 complex has the formula VO2Y, where Y¯ represent the fully dissociated aminocarboxylate anion. The stability constant of VO2Y was determined as log KVO2Y=11.32±0.35 at 25±0.1 °C and I=1 mol per liter of sodium perchlorate. The protonation constant of alanine was also determined poteniumetrically under above condition. %U