AMU Medical AMU Solved Paper-1999

  • question_answer
    When ethanol is subjected to dehydration in presence of\[{{H}_{2}}S{{O}_{4}},\]the intermediate formed is a

    A)  carbonium ion    

    B)  carbanion

    C)  radical           

    D)  carbine

    Correct Answer: A

    Solution :

    : Mechanism of dehydration of alcohols \[C{{H}_{3}}C{{H}_{2}}OH+{{H}^{+}}\rightleftharpoons \underset{Protonated\text{ }ethyl\text{ }alcohol}{\mathop{C{{H}_{3}}C{{H}_{2}}OH_{2}^{+}}}\,\] \[C{{H}_{3}}C{{H}_{2}}OH_{2}^{+}\xrightarrow[{}]{{}}\underset{ethyl\text{ }carbonium\text{ }ion}{\mathop{C{{H}_{3}}\overset{\oplus }{\mathop{C{{H}_{2}}}}\,+{{H}_{2}}O}}\,\] \[C{{H}_{3}}CH_{2}^{+}\to C{{H}_{2}}=C{{H}_{2}}+{{H}^{+}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner