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J & K CET Medical J & K - CET Medical Solved Paper-2006

  • question_answer
    The correct order for homolytic bond dissociation energies (\[\Delta H\]in kcal/Mol) for \[C{{H}_{4}}(A),{{C}_{2}}{{H}_{6}}(B)\]and\[C{{H}_{3}}Br(C),\]under identical experimental conditions:

    A)  \[C>B>A\]         

    B)  \[B>C>A\]

    C)  \[C>A>B\]         

    D)  \[A>B>C\]

    Correct Answer: D

    Solution :

                    The order of homolytic bond dissociation energies of\[C{{H}_{4}},{{C}_{2}}{{H}_{6}}\]and\[C{{H}_{3}}Br\]is as: \[\begin{align}   & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{4}}>\,\,{{C}_{2}}{{H}_{6}}>C{{H}_{3}}Br \\  & \Delta H(kcal/mol)\,\,~~105~~~~~\,\,\,\,\,100~~~~~~~\,\,\,\,\,\,\,\,\,70 \\ \end{align}\]


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