The chemical formula of rust is:

2024

The chemical formula of rust is:

  1. A.

    Fe₂O₃

  2. B.

    Fe

  3. C.

    FeO

  4. D.

    FeSO₄

  5. E.

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Correct answer: A

Rust is formed when iron reacts with oxygen and moisture in the air. Chemically, rust is hydrated iron(III) oxide.

The actual composition of rust is:

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However, in competitive examinations and basic chemistry questions, rust is usually represented as: Fe₂O₃

Therefore:

Correct Answer: A) Fe₂O₃

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