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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 36

  • question_answer
    Consider the following reactions: I. \[A+BC\]        II. \[C+B\xrightarrow{{{k}_{1}}}D\] Then \[{{k}_{1}}[A][B]-{{k}_{-1}}[C]-{{k}_{2}}[C][B]\] is equal to

    A) \[\frac{-d[A]}{dt}\]

    B)                    \[\frac{-d[B]}{dt}\]

    C) \[\frac{-d[C]}{dt}\]        

    D)                    \[\frac{-d[D]}{dt}\]

    Correct Answer: C

    Solution :

    [c] \[A+BC\] Rate of \[C={{k}_{1}}[A]\,\,[B]-{{k}_{-1}}[C]\] \[C+B\xrightarrow{{{k}_{2}}}D\] Rate of disappearance of \[C=-{{k}_{2}}[C]\,[B]\] \[\Rightarrow \] net rate of C \[\Rightarrow \,\,\,{{k}_{1}}[A]\,[B]-{{k}_{-1}}[C]-{{k}_{2}}[C]\,[B]=\frac{d[C]}{dt}\]


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