試題詳解

26. You have immersed electrodes of a light bulb in a solution of H₂SO₄ such that the light bulb is on. You add a dilute solution and the bulb grows dim. Which of the following molecule could be in the solution?
(A) Cu(NO₃)₂
(B) K₂SO₄
(C) NaNO₃
(D) ZnCl₂
(E) Pb(NO₃)₂