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
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(E) Pb2+ 和 SO4-2 形成...
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