Oxalate ion, which can be abbreviated ox^2-, is a ligand for Cu^2+, forming the complex ion Cu(ox)2^2-. The formation constant for this ion is 3.0 x 10^8.
a) The solubility of Cu(OH)2 is enhanced in the presence of oxalate. What is the equilibrium constant for the reaction of solid Cu(OH)2 with aqueous oxalate ion?
b) What is the molar solubility of Cu(OH)2 in the presence of 0.10 M oxalate ion? Report your answer to three significant figures.