試題詳解

13. You are trying to dissolve the most amount of Ag₂S possible. Beaker A is filled with 100 mL of pure water and beaker B filled with 100 mL of a 0.10 M Ag₂SO₄ solution. Which beaker will dissolve the most Ag₂S and why?
(A) Beaker B, because sulfate helps dissolve salts
(B) Beaker A, because there isn't a common ion already present
(C) Beaker A, because pure water increases the of Ag₂S
(D) Beaker B, because the silver ions in the solution will increase the solubility
(E) Beaker B, because "like dissolves like"