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题文

已知 2Fe3 +2I=2Fe2 +I2  、  2Fe2 +Cl2=2Fe3 +2Cl ;则有关离子的还原性由强到弱的顺序为(     )                             

A.Cl->Fe2+>I-  B.Fe2+>I->Cl-
C.I->Fe2+>Cl- D.Fe2+>Cl->I-
科目 化学   题型 选择题   难度 中等
知识点: 反应热的大小比较
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