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Define half life period....

Define half life period.

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Knowledge Check

  • The rate of a first order reaction is 0 04 mol L^-1s^-1 at 10 seconds and 003 mol L^-1s^-1 at 20 seconds after initiation of the reaction. The half life period of the reaction is

    A
    44.1 s
    B
    54.1 s
    C
    24.1 s
    D
    32.1 s

  • The half life period for a first order reaction is .......

    A
    independent of concentration
    B
    proportional to concentration
    C
    inversely proportional to concentration
    D
    inversely proportional to the square of the concentration

  • For which order half life period is independent of initial concentration?

    A
    zero
    B
    First
    C
    Second
    D
    Third

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    The radioactive decay constant is 4.28 xx 10^-4 year^-1 . What is the half life period of it?

    Express the relation between the half-life period of a reaction and initial concentration for the reaction of the first order.

    State the law of radioactive decay. A radioactive material decays frac(3)(4) th in frac(3)(4) sec. Find half life period of the material.

    For a zero order reaction the initial concentration of the reactant is 1.386 mol L^(-1) . If the half life period of the same be 20S then what. Shall be the concentration of the reaction after 30S.

    A radioactive material reduces to 1/8 th of its initial amount in 18000 y. Find its half-life period.

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