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COMEDK2018ChemistryRedox Reactions

In the conversion of Br ₂ to BrO ₃⁻ , the oxidation number of Br changes from

Options

  1. Azero to +5
  2. B+1 to +5
  3. Czero to -3
  4. D+2 to +5

Correct answer

A. zero to +5

Step-by-step solution

The oxidation number of Br in Br ₂ is zero. The oxidation number of Br is BrO ₃⁻ aligned x+3 (-2) &=-1 x &=-1+6 x &=+5 aligned

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