JCECE Engineering JCECE Engineering Solved Paper-2009

  • question_answer
    The concentration of a reactant \[X\] decreases from \[0.1\,\,M\] to \[0.005\,\,M\] in\[40\,\,\min \]. If the reaction follows first order kinetics, the rate of the reaction when the concentration of \[X\] is \[0.01\,\,M\] will be

    A) \[1.73\times {{10}^{-4}}M\,\,{{\min }^{-1}}\]

    B) \[3.47\times {{10}^{-4}}M\,\,{{\min }^{-1}}\]

    C)  \[3.47\times {{10}^{-5}}M\,\,{{\min }^{-1}}\]

    D)  \[7.5\times {{10}^{-4}}M\,\,{{\min }^{-1}}\]

    Correct Answer: D

    Solution :

    Rate of reaction when concentration of\[X\]is\[0.01\,\,M\]will be                 \[=0.075\times 0.01=7.5\times {{10}^{-4}}M{{\min }^{-1}}\]


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