RAJASTHAN PMT Rajasthan - PMT Solved Paper-1998

  • question_answer
    Which of the following react with acetic acid for obtain acetic anhydride?

    A)  \[{{P}_{2}}{{O}_{5}}\]                   

    B)                         \[PC{{l}_{5}}\]

    C)                         \[{{P}_{2}}{{O}_{3}}\]                   

    D)                         None of these

    Correct Answer: A

    Solution :

    \[\underset{Acetic\,acid}{\mathop{C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-OH}}\,+C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-OH\xrightarrow[\Delta -{{H}_{2}}O]{{{P}_{2}}{{O}_{5}}}\] \[C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-\underset{Acetic\,anhydride}{\mathop{O-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}}}\,\]


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