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NEET Sample Paper NEET Sample Test Paper-82

  • question_answer
    The sulphonation of aromatic hydrocarbon comes under electrophilic substitution reaction. Generally, it is difficult to introduce more than one substituent at the aromatic hydrocarbon. Which of the following reagent is involved in sulphonation of aromatic hydrocarbon?

    A)  \[HSO_{4}^{-}\]                    

    B)  \[{{H}_{2}}S{{O}_{4}}\]

    C)  \[S{{O}_{2}}\]                        

    D)  \[S{{O}_{3}}\]

    Correct Answer: A

    Solution :

    In sulphonation, \[2{{H}_{2}}S{{O}_{4}}\,\,\,\,\underbrace{S{{O}_{3}}+{{H}_{3}}{{O}^{+}}}_{\begin{smallmatrix}  \,\,\,\,\,\,\,Sulphur \\  \,\,\,\,\,\,\,\,\,trioxide  \\  \,\,\,(Electrophile) \end{smallmatrix}}+HSO_{4}^{-}\]


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