KCET · Chemistry · Hydrocarbons
The electrophile involved in the sulphonation of benzene is
- A \(\mathrm{SO}_{3}^{+}\)
- B \(\mathrm{SO}_{3}^{2-}\)
- C \(\mathrm{H}_{3}^{+} \mathrm{O}\)
- D \(\mathrm{SO}_{3}\)
Answer & Solution
Correct Answer
(D) \(\mathrm{SO}_{3}\)
Step-by-step Solution
Detailed explanation
The electrophile involved in the sulphonation of benzene is \(\mathrm{SO}_{3}\).
\[
2 \mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow \mathrm{SO}_{3}+\mathrm{H}_{3} \mathrm{O}^{+}+\mathrm{HSO}_{4}^{-}
\]
\[
2 \mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow \mathrm{SO}_{3}+\mathrm{H}_{3} \mathrm{O}^{+}+\mathrm{HSO}_{4}^{-}
\]
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