Verified Solution • 2025–26 Session moderate

QNEET-2022-Ch-493: NEET 2022 Chemistry - Class 11 NEET-2022-Ch-493 Solution: What fraction of Fe exists as Fe(III) in \(Fe_{0.96}O\)?…

What fraction of Fe exists as Fe(III) in Fe0.96OFe_{0.96}O? (Consider Fe0.96OFe_{0.96}O to be made up of Fe(II) and Fe(III) only) 1/20 1/12 0.08 1/16

Multiple Choice Options

  • A 120{1 \over {20}} 20 1 _
  • B 112{1 \over {12}} 12 1 _
  • C 0.08
  • D 116{1 \over {16}} 16 1 _

Step-by-Step Verified Solution

Fe 0.96 O Let Fe(II) present in Fe 0.96 O = x Fe(III) present = (0.96 _ x) Total charge on Fe = 2x + (0.96 _ x)3 Total charge on O = _ 2 2x + (0.96 _ x)3 = 2 2x + 2.88 _ 3x = 2 _ x = _ 0.88 x = 0.88 Fe 2+ = 0.88, Fe 3+ = 0.08 Fraction of Fe 3+ = 0.08 0.96 = 1 12

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