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.
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