Which ionic compound(s) listed below would increase in solubility upon lowering the pH?
I. ZnCO₃
II. ZnS
III. AgCN

Question

Which ionic compound(s) listed below would increase in solubility upon lowering the pH? I. ZnCO₃ II. ZnS III. AgCN

Quizplus · Accepted Answer

Ionic compounds containing anions that can react with H+ (such as CO3^2-, S^2-, and CN^-) will see an increase in solubility when the pH is lowered. This is because the addition of H+ shifts the equilibrium to form more soluble species (e.g., HCO3^-, HS^-, and HCN), effectively removing the anion from the solution and allowing more of the solid to dissolve.

Which Ionic Compound(s) Listed Below Would Increase in Solubility Upon