問題詳情
11. A solution contains cations Ag+, Pb2+, and Ni2+. Dilute solutions of NaCl, Na2SO4, and Na2S are available to separate the cations from each other. In order to effective separation, the solutions should be added in which order?
(A) Na2S, NaCl, Na2SO4
(B) Na2SO4, NaCl, Na2S
(C) Na2SO4, Na2S, NaCl
(D) NaCl, Na2S, Na2SO4
(E) NaCl, Na2SO4, Na2S
參考答案
答案：B
統計：A:0,B:1,C:0,D:0,E:0
難度：計算中