Consider the Equilibrium of Magnesium Fluoride,MgF₂(s),in Water

Multiple Choice

Consider the equilibrium of magnesium fluoride,MgF₂(s) ,in water. MgF₂(s) ? Mg²⁺(aq) + 2F?(aq) , What is the effect of adding perchloric acid (i.e.decreasing the pH of solution) ?

A) The acid will have no effect on the magnesium fluoride equilibrium.
B) The F? will be protonated,resulting in more MgF₂(s) dissolving.
C) More MgF₂(s) will be formed,thus reducing Mg²⁺ and F? concentrations in solution.
D) Magnesium perchlorate,Mg(ClO₄) ₂(s) ,will precipitate.
E) Magnesium hydride,MgH₂(s) ,will precipitate.