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Chemical Kineti...

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  • Question 1
    1 / -0

    For a reaction A → products, initial conc. of A is 2M. After 10 minutes reaction is 10% completed. If r = k[A] then half life is approximately.

  • Question 2
    1 / -0

    The rate of formation of C is the following reaction 2A + B → 2C is 10 Kg min–1. Hence the rate of disappearance of A will be (kg/min)

  • Question 3
    1 / -0

    In the presence of catalyst Ea is lowered by 2Kcal at 27°C. Hence rate will be

  • Question 4
    1 / -0

    For reaction A2 + 2B → 2AB. Then order w.r.t. A2 and B are respectively

    [A2]

    [B]

    Rate (M sec–1)

    0.1

    0.2

    1 × 10–2

    0.2

    0.2

    2 × 10–2

    0.2

    0.4

    8 × 10–2

  • Question 5
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    The rate of a reaction gets doubled when the temperature changes from 7°C to 17°C. By what factor will it change when the temperature change from 17°C to 27°C?

  • Question 6
    1 / -0

    Two first order reactions have half lives in the ratio of 3 : 2. Calculate the ratio of time intervals t1 : t2, the time t1 and t2 are the time period for 25% and 75% completion for the first and second reaction respectively.

  • Question 7
    1 / -0

    A substance (initial concentration, a) reacts according to zero-order kinetics. The time it takes for the completion of the reaction is

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