Q16 / 180 · KCET 2024 · Chemistry

PCC is

  • A
    $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7+$ Pyridine
  • B
    $\mathrm{CrO}_3+\mathrm{CHCl}_3$
  • C
    $\mathrm{CrO}_3+\mathrm{H}_2 \mathrm{SO}_4$
  • Correct answer
    D
    A complex of chromium trioxide with pyridine $+\mathrm{HCl}$

Solution

PCC is pyridinium chlorochromate. It is a complex of chromium trioxide with pyridine +HCl , i.e. $\left[\mathrm{C}_5 \mathrm{H}_5 \mathrm{NH}\right]^{+}\left[\mathrm{CrO}_3 \mathrm{Cl}\right]$. It is a reagent in organic synthesis used primarily for oxidation of alcohols to form carbonyl.

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

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