J & K CET Medical J & K - CET Medical Solved Paper-2007

  • question_answer
    The units of the rate constant of a second order reaction are

    A) \[mo{{l}^{-1}}{{L}^{-1}}{{s}^{-1}}\]          

    B) \[mo{{l}^{-1}}L\text{ }{{s}^{-1}}\]

    C)  \[mo{{l}^{-1}}\text{ }L\text{ }s\]             

    D) \[mol\text{ }{{L}^{-1}}{{s}^{-1}}\]

    Correct Answer: B

    Solution :

                    \[\frac{dx}{dt}=k{{[A]}^{2}}\] \[k=\frac{dx}{dt{{[A]}^{2}}}\] \[=\frac{mol{{(L)}^{2}}}{L\times s\times {{(mol)}^{2}}}\] \[=mo{{l}^{-1}}L\,{{s}^{-1}}\]


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