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WB JEE Medical WB JEE Medical Solved Paper-2015

  • question_answer
    For the reaction \[A+2B\xrightarrow{{}}C,\]the reaction rate is doubled, if the concentration of A is doubled. The rate is increased by four times when concentrations of both A and B are increased by four times. The order of the reaction is

    A)  3     

    B)  0     

    C)  1     

    D)  2

    Correct Answer: C

    Solution :

     Rate of reaction is doubled when  concentration of A is doubled. Again, rate of reaction becomes four times when concentration of A is increased by four times. It is clearly shown that there is no effect on rate of reaction on increasing the concentration of B. Thus, order with respect to A is 1 and order with respect to B is 0. Total order of reaction \[=1.\]


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