Q45 / 160 · JIPMER 2007 · Chemistry

The number of moles of $\mathrm{KMnO}_4$ reduced by one mole of KI in alkaline medium is

  • A
    one-fifth
  • B
    five
  • C
    one
  • Correct answer
    D
    two

Solution

In alkaline solution, $\mathrm{KMnO}_4$ is reduced to $\mathrm{MnO}_2$ (colourless). Figure Hence, two moles of $\mathrm{KMnO}_4$ are reduced by one mole of KI.

Hence, the correct answer is option: 'D'.

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