J & K CET Medical J & K - CET Medical Solved Paper-2001

  • question_answer
    Rate constants of some of the reactions are given below. Which one belongs to third order reaction?

    A)  \[8.7\times {{10}^{-3}}L\text{ }mo{{l}^{-1}}{{s}^{-1}}\]

    B)  6.5 mol

    C)  \[5.3\times {{10}^{-5}}{{s}^{-1}}\]

    D)  \[2.5\times {{10}^{-2}}{{L}^{2}}mo{{l}^{-2}}{{s}^{-1}}\]

    Correct Answer: D

    Solution :

                    For third order reaction rate \[=k{{[A]}^{3}}\]                 \[\frac{mol\,{{L}^{-1}}}{s}=k{{[mol\,{{L}^{-1}}]}^{3}}\]                 \[k=\frac{1}{mo{{l}^{2}}{{L}^{-2}}s}\] \[=mo{{l}^{-2}}{{L}^{2}}\text{ }{{s}^{-1}}\]


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