某学生鉴定甲盐的方法和步骤如图所示:下列结论正确的是 A.甲中

某学生鉴定甲盐的方法和步骤如图所示:下列结论正确的是

A.甲中一定有Fe3+                  B.乙为AgI沉淀

C.丙中一定有Fe3+                  D.甲一定为FeBr2溶液

答案

C

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