Why is the chemical formula of iron oxide Fe3O4-when the valency of iron is 2-3 and that of oxygen is 2

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Standard X

Chemistry

Classification of Modern Periodic Table

Why is the ch...

Question

Why is the chemical formula of iron oxide Fe₃O₄ when the valency of iron is 2,3 and that of oxygen is 2

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Solution

Fe3O4 can be thought of as a mixture of both compounds in equal amounts. So Fe3O4 contains both Fe(II) and Fe(III) ions; twice as much Fe(III) as Fe(II).

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Why is CuSO₄the expected formula of Copper Sulphate and not Cu₂SO₄ when Copper has variable valency of Cu⁺ and Cu²⁺ ; Here the higher valency is used for the salt.

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Why is the chemical formula of iron oxide Fe3O4 when the valency of iron is 2,3 and that of oxygen is 2

Fe3O4 can be thought of as a mixture of both compounds in equal amounts. So Fe3O4 contains both Fe(II) and Fe(III) ions; twice as much Fe(III) as Fe(II).

Why is the chemical formula of iron oxide Fe₃O₄ when the valency of iron is 2,3 and that of oxygen is 2