Consider the following reaction. Which statement is true?Fe3O4 + 4C → 4CO + 3FeO has been reduced.C has been reduced.C has been displaced.Fe3O4 has been reduced.
Question
Consider the following reaction. Which statement is true?Fe3O4 + 4C → 4CO + 3FeO has been reduced.C has been reduced.C has been displaced.Fe3O4 has been reduced.
Solution
The statement "Fe3O4 has been reduced" is true.
Here's the step-by-step explanation:
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In the given reaction, Fe3O4 + 4C → 4CO + 3Fe, we can see that Fe3O4 (Iron(II,III) oxide) is reacting with C (Carbon) to form CO (Carbon monoxide) and Fe (Iron).
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Reduction in chemistry refers to the gain of electrons. In the reaction, Fe3O4 is reduced to Fe. This is because the oxidation state of Iron in Fe3O4 is +3 and +2 (as it's a mixed oxide), and it changes to 0 in Fe. This decrease in oxidation state indicates a gain of electrons, which is the definition of reduction.
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Therefore, the statement "Fe3O4 has been reduced" is true.
The other statements are not correct because Carbon is actually being oxidized (it's losing electrons and forming CO), and there's no displacement reaction happening here.
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