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  3. BCECE Medical

BCECE Medical BCECE Medical Solved Papers-2009

  • question_answer
    The rate constant of a reaction is\[1.2\times {{10}^{-2}}mo{{l}^{-2}}{{L}^{2}}{{s}^{-1}}\]. The order of the reaction is

    A)  0               

    B)  1

    C)  2                

    D)  3

    Correct Answer: D

    Solution :

    For n order, the units of rate constant \[=mo{{l}^{1-n}}{{L}^{n-1}}{{s}^{-1}}\]. where, n = order of reaction Given, units of rate constant \[=mo{{l}^{-2}}{{L}^{2}}{{s}^{-1}}\] On comparing the units of rate constants                 \[1-n=-2\] \[\therefore \] \[n=3\] or            \[n-1=2\]                 \[n=3\] \[\therefore \] The order of the reaction is three.


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