Question #e847a

1 Answer
Stefan V. · James C.
Aug 7, 2015

"Fe"_3"O"_4Fe3O4 is iron (II, III) oxide.

Explanation:

Chemical formation:

This process is described by the Schikorr reaction. Under anaerobic conditions, Iron(II) hydroxide can be oxidised by water to form iron (II,III) oxide and molecular hydrogen.

  • 3Fe(OH)_(2(aq)) -> Fe_3O_(4(aq)) + H_(2(g)) + 2H_2O_((l))3Fe(OH)2(aq)→Fe3O4(aq)+H2(g)+2H2O(l)

  • Iron(II) hydroxide → Iron(II,III) oxide + hydrogen + water

Reasons:

  • Iron (II, III) contains iron in two oxidation states, +2 and +3.
  • it contains the iron (II), "Fe"^(2+)Fe2+, and iron (III), "Fe"^(3+)Fe3+, ions, which is why its chemical formula is written both as "Fe"_3"O"_4Fe3O4, and "FeO" * "Fe"_2"O"_3FeO⋅Fe2O3.

"Fe"_3"O"_4Fe3O4 has a molar mass of 231.533 mol/g.

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