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NEET2011ChemistryRedox ReactionsActual

When KMnO ₄ reacts with KBr in alkaline medium gives bromate ion. Then oxidation state of Mn changes from +7 to

Options

  1. A+6
  2. B+4
  3. C+3
  4. D+2

Correct answer

B. +4

Step-by-step solution

: 2 MnO ₄⁻+ Br ⁻+ H ₂ O 2 +4 MnO ₂ + BrO ₃⁻+2 OH ⁻

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