NEET-XII-Chemistry

04: Chemical Kinetics

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Qstn# II-10 Prvs-QstnNext-Qstn
  • #10
    In a reaction between A and B, the initial rate of reaction (r0) was measured for different initial concentrations of A and B as given below:







    A/ mol L-1
    0.20
    0.20
    0.40
    B/ mol L-1
    0.30
    0.10
    0.05
    r0/ mol L-1 s-1
    5.07 × 10-5
    5.07 × 10-5
    1.43 × 10-4



    What is the order of the reaction with respect to A and B?
    Ans : Let the order of the reaction with respect to A be x and with respect to B be y.

    Therefore,



    Dividing equation (i) by (ii), we obtain



    Dividing equation (iii) by (ii), we obtain



    = 1.496

    = 1.5 (approximately)

    Hence, the order of the reaction with respect to A is 1.5 and with respect to B is zero.