Calculate the solubility (in mol/L) of Co(OH)3 (Ksp = 3 ? 10-43) in each of the following. (Assume that all solutions are at 25°C.)
(a) water (assume pH is 7.0 and constant)
mol/L
(b) a solution buffered at pH = 4.9
mol/L
(c) a solution buffered at pH = 11.1
mol/L