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 5.37×10−2 (pKa = 1.27). The loss of the second proton, which yields the oxalate ion has an equilibrium constant of 5.25×10−5 (pKa = 4.28). These values imply that, in solutions with neutral pH, there is no oxalic acid, and only trace amounts of hydrogen oxalate.
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 “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 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