試卷名稱:106年 - 106 台灣聯合大學系統學士班轉學考:普通化學#99866
年份:106年
科目:轉學考-普通化學
7. A solution contains the ions
. Dilute solutions of NaCl,
, 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