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The half-life periof of a first order re...

The half-life periof of a first order reaction is…………..of initial concentration.

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The half life period of a first order reaction is ……………………… of initial concentration of the reactant and………………….proportional to the rate constant.

Derive the equation for the rate constant of a first order reaction and show that the time required for the completion of half of the first order reaction is independent of initial concentration.

Knowledge Check

  • The half-life of a first order reaction is 30 min and the initial concentration of the reactant is 0.1 M. If the initial concentration of reactant is doubled, then the half-life of the reaction will be

    A
    1800 s
    B
    60 min
    C
    15 min
    D
    900 s

  • The half life of a first order reaction is 30 min and the initial concentration of the reactant is 0.1 M . If the initial concentration of reactant is doubled ,then the half life of the reaction will be

    A
    1800S
    B
    60 min
    C
    15 min
    D
    900s

  • The half-life periofs of a reaction at initial concentration 0.1 mol L^(-1) and 0.5 mol L^(-1) are 200s and 40 s , respectively. The order of the reaction is

    A
    `1`
    B
    `1//2`
    C
    `2`
    D
    `0`

    • Similar Questions

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    The half-life periof of a substance is 50 min at a certain initial concentration. When the concentration is reduced to one-half of its initial concentration, the half-life periof is found to be 25 min . Calculate the order of reaction.

    For the first order reaction half-life time is ………….. on the initial concentration.

    Prove that the half-life period for a first order reaction is quite independent of the initial concentration of reactants.

    Half life of a first order reaction is 4s and the initial concentration of the reactant is 0.12 M. The concentration of the reactant left after 16 s is

    The half-life period of a first order reaction is 10 minutes. Starting with initial concentration 12 M, the rate after 20 minutes is

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