RAJASTHAN ­ PET Rajasthan PET Solved Paper-2008

  • question_answer
    In the following dehydration reaction the hybridised state of carbon changes \[C{{H}_{3}}CON{{H}_{2}}\xrightarrow[{}]{{{P}_{2}}{{O}_{5}}}C{{H}_{3}}CN+{{H}_{2}}O\]

    A)  \[s{{p}^{3}}\]to\[s{{p}^{2}}\]         

    B) \[sp\]to \[s{{p}^{2}}\]

    C)  \[s{{p}^{2}}\]to\[sp\]      

    D) \[sp\]to\[s{{p}^{3}}\]

    Correct Answer: C

    Solution :

     \[\underset{s{{p}^{2}}}{\mathop{C{{H}_{3}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-N{{H}_{2}}}}\,\xrightarrow[{}]{{{P}_{2}}{{O}_{5}}}\underset{sp}{\mathop{C{{H}_{3}}-C\equiv N}}\,+{{H}_{2}}O\] In the above dehydration reaction the hybridised state of carbon is changing from \[s{{p}^{2}}\]tosp.


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