A change in pH will significantly affect the solubility of which, if any, of the following compounds? A)BaF ₂ B)CuCl C)CuBr D)AgI E)None of these choices are correct.

Question

Quizplus · Accepted Answer

BaF2 is an ionic compound that contains the fluoride ion, F-. The solubility of compounds containing anions from weak acids (like F-, which comes from HF) can be affected by changes in pH. When the pH decreases (becomes more acidic), the increased concentration of H+ ions can react with the F- ions to form HF, thus removing F- from the solution and driving the dissolution equilibrium forward, increasing the solubility of BaF2.

A Change in PH Will Significantly Affect the Solubility of Which