某溶液中大量存在以下五种离子:NO3-、SO42-、Fe3+、H+、M,其物质的

某溶液中大量存在以下五种离子:NO3-、SO42-、Fe3+、H+、M,其物质的量浓度之比为c(NO3-):c(SO42-):c(Fe3+):c(H+):c(M)=2:3:1:3:1,则M可能是(    )

A.Al3+                       B.Cl-                  C.Mg2+                             D.Ba2+

 

答案

C

解析:略

 

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