Redox Reactions And Electrochemistry Ques 366

Question: Oxida n states of the metal in the minerals Haematite and magnetite, respectively, are

Options:

A) II, III, in heamatite and III in magnetite

B) II, III in haematite and II in magnetite

C) II in haematite and II, III in magnetite

D) III is haematite and II, III in magnetite

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Answer:

Correct Answer: D

Solution:

[d] Hematite: $ Fe_2O_3\Rightarrow $ Oxidation state of Fe=III Magnetite: $ Fe_3O_4=FeO.Fe_2O_3 $ Oxidation state of Fe =II, III



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