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JIPMER Jipmer Medical Solved Paper-2007

  • question_answer
    The rate of reaction between two reactants A and B decreases by a factor of 4, if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is

    A)  -1                          

    B)         -2                          

    C)  1                            

    D)         2

    Correct Answer: B

    Solution :

    \[A+B\xrightarrow{{}}\]Product \[\text{Rate}\propto [A]{{[B]}^{-2}}\]    ?(i) The rate decreases by factor 4 if the concentration of reactant B is doubled So,          \[\text{Rate}\propto [A]\,{{[2B]}^{-2}}\] \[\propto \frac{[A]\,{{[B]}^{-2}}}{4}\]     ?(ii) Hence, order of reaction w.r.t reactant B is - 2.


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