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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2009

  • question_answer
    The rate equation for a reaction \[A\to B\] is\[r=k{{[A]}^{0}}\]. If the initial concentration of the reactant is a mol \[d{{m}^{-3}}\], the half-life period of the reaction is

    A)  \[\frac{a}{2k}\]                               

    B)  \[\frac{k}{a}\]

    C)  \[\frac{a}{k}\]                                  

    D)  \[\frac{2a}{k}\]

    Correct Answer: A

    Solution :

    \[A\xrightarrow{{}}B\] \[\because \]                     \[r=k{{[A]}^{0}}\] or                            \[r=k\]                 This is a zero order reaction. \[\therefore \]                  \[{{t}_{1/2}}=\frac{a}{2k}\]


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