1-1 某溶液含有 Ag + ,Pb 2+ ,Ba 2+ , Sr 2+ , 各离子浓度均为 0.10 mol · L -1 . 如果逐滴加入 K 2 CrO 4 稀溶液,上述离子开始沉淀的顺序为:(已知 K sp (Ag 2 CrO 4 ) =1.1 x 10 -12 , K sp (PbCrO 4 ) = 2.8 x 10 -13 , K sp (BaCrO 4 ) = 1.2 x 10 -10 , K sp (SrCrO 4 ) = 2.2 x 10 -5 ).
A.
Pb 2+ , Sr 2+ ,Ag + , Ba 2+
B.
Sr 2+ ,Ba 2+ , Ag + , Pb 2+
C.
Pb 2+ , Ag + , Ba 2+ , Sr 2+
D.
Pb 2+ , Ba 2+ ,Ag + , Sr 2+