Redox Reactions And Electrochemistry Ques 772

Question: Oxidation states of the metal in the minerals hematite and magnetite, respectively, are

Options:

A) II, III in hematite and II in magnetite

B) II, III in hematite and II in magnetite

C) II in hematite and II, II in magnetite

D) III in hematite and II, III in magnetite

Show Answer

Answer:

Correct Answer: D

Solution:

[d] Hematite: $ \theta =180^{0}, $ Magnetite: $ \underset{\text{mixed oxide}}{\mathop{Fe_3O_4}},\to Fe_2O_3(+3)+FeO(+2) $



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