试题与答案

下列各组离子能大量共存,加入NaOH溶液后有沉淀生成,加人盐酸后有气体生成的是

题型:选择题

题目:

下列各组离子能大量共存,加入NaOH溶液后有沉淀生成,加人盐酸后有气体生成的是

A.Na+、Cu2+、Cl-、CO32-

B.Na+、Ca2+、Cl-、HCO3-

C.Ca2+、Al3+、Cl-、NO3-

D.K+、Al3+、SO42-、Cl-

答案:

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