Oxalic acid (HOOC-COOH) is a simple diprotic acid. It is used commercially in bleaching straw and leather and removing rust and ink stains.
a. Write each dissociation step for the acid including the K values from appendix C.
b. What are the equilibrium concentrations of [H2C2O4], [HC2O4- ], and [C2O42- ] in a 0.150M H2C2O4 solution. (Hint: the concentrations of [H2C2O4], [HC2O4- ] are found together and used to find concentration of [C2O42- ].)
c. What is the pH of a 0.150M H2C2O4 solution using Ka values from appendix C in your textbook.
Apendix C Values:
a: Ka1= 5.6 x 10^-2
Ka2= 5.4 x 10^-5
Oxalic acid (HOOC-COOH) is a simple diprotic acid. It is used commercially in bleaching straw and...
Calculate the pH and the equilibrium concentrations of HC2O4- and C2O42- in a 0.0782 M oxalic acid solution, H2C2O4 (aq). For H2C2O4, Ka1 = 5.9×10-2 and Ka2 = 6.4×10-5 pH =_______ [HC2O4-] =___________ M [C2O42-] =___________ M
Calculate the pH and the equilibrium concentrations of HC2O4- and C2O42- in a 0.1160 M oxalic acid solution, H2C2O4 (aq). For H2C2O4, Ka1 = 5.9×10-2 and Ka2 = 6.4×10-5 pH = [HC2O4-] = M [C2O42-] = M