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NEET-XII-Chemistry

04: Chemical Kinetics

 page 2
Qstn# II-6 Prvs-QstnNext-Qstn
  • #6
    A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is
    () doubled () reduced to half?
    () reduced to half?
    () reduced to half?
    () doubled () reduced to half?
    () reduced to half?
    () reduced to half?
    Ans : Letthe concentration of the reactant be [A] = a

    Rate of reaction, R = k [A]2

    = ka2
    () If the concentration of the reactant is doubled, i.e. [A] = 2a, then the rate of the reaction would be



    = 4ka2

    = 4 R

    Therefore, the rate of the reaction would increase by 4 times.
    () If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to
    () If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to
    () If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to
    () If the concentration of the reactant is doubled, i.e. [A] = 2a, then the rate of the reaction would be



    = 4ka2

    = 4 R

    Therefore, the rate of the reaction would increase by 4 times.
    () If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to
    () If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to
    () If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to
  • #6-i
    doubled () reduced to half?
    () reduced to half?
    Ans : If the concentration of the reactant is doubled, i.e. [A] = 2a, then the rate of the reaction would be



    = 4ka2

    = 4 R

    Therefore, the rate of the reaction would increase by 4 times.
    () If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to
    () If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to
  • #6-ii
    reduced to half?
    Ans : If the concentration of the reactant is reduced to half, i.e. , then the rate of the reaction would be





    Therefore, the rate of the reaction would be reduced to