Q12 / 170 · Manipal (MET) 2019 · Chemistry

The electrophile involved in the sulphonation of benzene is

  • A
    $\mathrm{SO}_3^{+}$
  • B
    $\mathrm{SO}_3^{2-}$
  • C
    $\mathrm{H}_3^{+} \mathrm{O}$
  • Correct answer
    D
    $\mathrm{SO}_3$

Solution

The electrophile involved in the sulphonation of benzene is $\mathrm{SO}_3$ $2 \mathrm{H}_2 \mathrm{SO}_4 \rightarrow \mathrm{SO}_3+\mathrm{H}_3 \mathrm{O}^{+}+\mathrm{HSO}_4^{-}$

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

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