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Uttarakhand PMT Uttarakhand PMT Solved Paper-2009

  • question_answer
    For a first order reaction\[A\xrightarrow[{}]{{}}\]Products, the half-life is 100 s. The rate constant of the reaction is

    A)  \[6.9\times {{10}^{-2}}{{s}^{-1}}\]

    B)  \[6.93\times {{10}^{-4}}{{s}^{-1}}\]

    C)  \[6.93\times {{10}^{-3}}{{s}^{-1}}\]

    D)  \[6.93\times {{10}^{-1}}{{s}^{-1}}\]

    Correct Answer: C

    Solution :

     For first order reaction, Rate constant, \[k=\frac{0.693}{{{t}_{1/2}}}\] \[=\frac{0.693}{100}\] \[=6.93\times {{10}^{-3}}{{s}^{-1}}\]


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