65. A solution contains the ions Ag⁺, Pb²⁺, and Ni²⁺. Dilute solutions of NaCl, Na₂SO₄, and Na₂S are available to separate the positive ions from each other. In order to effect separation, the solutions should be added in which order?
(A) Na₂SO₄, NaCl, Na₂S
(B) Na₂SO₄, Na₂S, NaCl
(C) Na₂S, NaCl, Na₂SO₄
(D) NaCl, Na₂S, Na₂SO₄
(E) NaCl, Na₂SO₄, Na₂S

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統計: A(1), B(0), C(0), D(0), E(0) #3853580

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