Consider a solution of 0.1M ZN2+ and 0.1M CU2+ that is saturated with H2S. The solubility product constants for XNS and CUS are 1.1x10^-21 and 6x10^-36, respectively. 1)How do you expalin that both ZnS and CuS will precipitate at pH8. 2) Show that only CuS will precipitate when (H3O+) = 0.3M.