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BHU PMT BHU PMT (Screening) Solved Paper-2006

  • question_answer
    For the reaction\[A+B\xrightarrow[{}]{{}}C,\]it found that doubling the concentration of A increases the rate by 4 times,  and doubling the concentration of B doubles the reaction rate. What is the overall order of the reaction?

    A)  4                                            

    B)  3/2

    C)  3                                            

    D)  1

    Correct Answer: C

    Solution :

                     \[A+B\to C\] On doubling the concentration of A rate of reaction increases by four times. \[Rate\propto {{[A]}^{2}}\] However, on doubling the concentration of B, rate of reaction increases two times. \[[R]\propto [B]\]Thus, overall order of reaction\[=2+1=3\].


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