Question

difference between fe2o3 and fe3o4(50 points)

Answer 1

Difference Between Fe2O3 and Fe3O4 Definition

Fe2O3: Fe2O3 is iron(III) oxide, also known as hematite.

Fe3O4: Fe3O4 is iron(II,III) oxide, also known as magnetite.

Appearance

Fe2O3: Fe2O3 appears as dark red or brick red solid powder.

Fe3O4: Fe3O4 appears as a black solid powder.

Oxidation State of Iron

Fe2O3: Fe2O3 has Fe3+ oxidation state.

Fe3O4: Fe3O4 has both Fe2+ and Fe3+ oxidation states.

Molar Mass

Fe2O3: The molar mass of Fe2O3 is 159.687 g/mol.

Fe3O4: The molar mass of Fe3O4 is 231.531 g/mol.

Melting Point

Fe2O3: Melting point of Fe2O3 is 1565°C

Fe3O4: Melting point of Fe3O4 is 1597°C

Boiling Point

Fe2O3: Fe2O3 decomposes at high temperatures.

Fe3O4: The boiling point of Fe3O4 is 2623°C.

Magnetic Properties

Fe2O3: Fe2O3 is paramagnetic.

Fe3O4: Fe3O4 is ferromagnetic.

Attraction Towards a Magnetic Field

Fe2O3: Fe2O3 can be attracted to a strong, external magnetic field.

Fe3O4: Fe3O4 can be attracted to even a weak, external magnetic field.

Crystal Structure

Fe2O3: Fe2O3 exist in two major polymorphs; alpha phase, gamma phase and some other phases. Alpha phase has rhombohedral structure, and gamma Fe2O3 has a cubic structure.

Fe3O4: Fe3O4 has a cubic, inverse spinel structure.

Electrical Conductivity

Fe2O3: Fe2O3 is less electrical conductive when compared to Fe3O4.

Fe3O4: Fe3O4 is a good electrical conductor, and the conductivity is about 106 times higher than that of Fe2O3.

Answer 2

Hey mate!!
Here is your answer

Both of them are oxides of iron. While Fe203 is a simple oxide in which the oxidation state of Fe is +3 only whereas Fe304 is a mixed oxide where Fe is present in both +3 and +2 oxidation states.
Fe203 is written as iron(II) oxide whereas Fe304 is written as iron(III) oxide.


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