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The formula for rust is:
(A) FeO
(B) Fe2O3
(C) Fe3O4
(D) Fe2O3 xH2O
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Answer / pisgahchemist
Actually, rust can take several forms. Under water, rust is
Fe(OH)3, and dehydrated rust is Fe2O3. But the rust that
most of us see is FeO(OH), which unfortunately is not listed
among the "answers". Too bad the item writer isn't aware of
this. The best answer among those which are given is (D),
the hydrated iron(III) oxide.
| Is This Answer Correct ? | 14 Yes | 3 No |
Answer / joshua tamm
the answer is all of them
its to do with oxidation states, of fe2+ and fe3+
and as for the last one, that is another way of saying the
rust is hydrated (i.e water is traped in the bonds of the
rust)
| Is This Answer Correct ? | 12 Yes | 13 No |
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