A.CaCl₂                      B.CH₃COONa                       C.NH₃                          D.K₂CO₃

物质的量浓度相同的下列溶液中，含粒子种类最多的是

A.CaCl₂                                                                                         B.CH₃COONa

C.NH₃                                                                                             D.K₂S

物质的量浓度相同的下列溶液中，含粒子种类（分子和离子）最多的是               

A、NaCl                   B、CH₃COONa

C、氨水                   D、K₂CO₃