Oxalate ION Essay

The dissociation of protons from oxalic acid proceeds in a stepwise manner as for other polyprotic acids. Loss of a single proton results in the monovalent hydrogenoxalate anion HC2O4−. A salt with this anion is sometimes called an acid oxalate, monobasic oxalate, or hydrogen oxalate. The equilibrium constant (Ka) for loss of the first proton is 5.37Ãâ€"10−2 (pKa = 1.27). The loss of the second proton, which yields the oxalate ion has an equilibrium constant of 5.25Ãâ€"10−5 (pKa = 4.28). These values imply that, in solutions with neutral pH, there is no oxalic acid, and only trace amounts of hydrogen oxalate.[1] The literature is often unclear on the distinction between H2C2O4, HC2O4-, and C2O42-, and the collection of species is referred to oxalic acid. otany patnawomenscollege.in/journal Explore, 2010, Page No. 63–67 Vol. II No. 2 Analysis of oxalate of fresh and stored tomato juice Devshikha*, Nitya Priyadarshi*, Sukriti Rani Prasad** *B.Sc. –II year (2008-2011), Department of Botany, Patna Women’s College, Patna University **Lecturer (Gue Premium663 Words3 Pages Study of Oxalate Ion St. John’s Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT â€Å"STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT† Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011 By Abdud Dayan Adeeb Of Class XII C St. John’s Senior Premium1368 Words6 Pages Oxalate Oxalate From Wikipedia, the free encyclopedia Jump to: navigation, search The structure of the oxalate anion A ball-and stick model of oxalate Oxalate (IUPAC: ethanedioate) is the dianion with the formula C2O42−, also written (COO)22−. Either name is often used for derivatives, such as