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AP EAMCET202124 Aug 2021Evening ShiftChemistryRedox ReactionsActual

The equivalent weight of Fe in Fe ₂ O ₃ is ( . Atomic mass of Fe =56 ~g ~mol ⁻¹ )

Options

  1. A56.0
  2. B18.6
  3. C28.0
  4. D14.0

Correct answer

B. 18.6

Step-by-step solution

In Fe ₂ O ₃ , the oxidation state of Fe is +3 . It means one-third of Fe mole is enough to combine with 8 ~g of O ₂ . Therefore, the equivalent weight of iron in Fe ₂ O ₃= 55.8 3 =18.6 ~g

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