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Haryana PMT Haryana PMT Solved Paper-1999

  • question_answer
    The reaction \[A+2B+C\to Z\] occurs by the      following mechanism :                        (i)  \[A+B\xrightarrow{{}}''X''\](fast)                       (ii)  \[X+C\xrightarrow{{}}Y\](slow)                          (iii) \[V+B\xrightarrow{{}}X\](very fast) Rate law for this reaction is:

    A)  \[K[X][Y][Z]\]

    B)  \[K[Z]\]

    C)  \[K[A]{{[B]}^{2}}[C]\]

    D)  \[K[C]\]

    Correct Answer: D

    Solution :

                    Slow step is the rate determining step of the reaction only in step (ii) the reaction 'C' is involved in the slow step.


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