Question

The solubility product for Zn(OH)2 is 3.0x10^-16. The formation constant for the hydroxo complex,Zn(OH)4^2- , is 4.6x10^17. What is the minimum concentration of OH- required to dissolve 1.6×10−2 mol of Zn(OH)2 in a liter of solution?

Answer 1

The minimum concentration of OH- required to dissolve 1.6×10−2 mol of Zn(OH)2 in a liter of solution is 4.6x10^-14 M.