Question

how Fe3O4 is formed?

Answer 1

Answer:

when iron is exposed into air it forms

Answer 2

Magnetite formation:

Schikorr Reaction:

• The ferrous hydroxide is oxidized by water in anaerobic condition to form ferric oxide.
• The ratio of ferrous hydroxide used in reaction to ferric oxide formed is 1 : 3.

Massart Method:

• The iron (II) chloride is added to iron (III) chloride in presence of sodium hydroxide, which leads to formation of ferric oxide.
• Ferric oxide is a highly magnetized material and this reaction is highly affected by the environmental changes.