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The rate equation for a reaction AtoB is...

The rate equation for a reaction `AtoB` is `r=k[A]^(0)`. If the initial concentration of the reactant is a mol `dm^(-3)`, the half life period of the reaction is

A

`k/a`

B

`a/k`

C

`(2a)/k`

D

`a/(2k)`

Text Solution

Verified by Experts

The correct Answer is:
D
According to the rate equation given, the reaction is of zero order.
For a zero order reaction `t_(1//2)propa`
or `t_(1//2)=a/(2k)`
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Knowledge Check

  • The rate equation for a reaction A rarr B is r = k[A]^(@) . If the initial concentration of the reactant is a mol / dm^(3) the half life period of the reaction is :

    A
    k/a
    B
    a/k
    C
    2a/k
    D
    a/2k

  • The rate equation for a reaction : A rarr B is r = k [A]^@ . If the initial concentration of the reactant is a mol dm^(-3) , the half life period of the reaction is

    A
    `a/(2k)`
    B
    `k/a`
    C
    `a/k`
    D
    `(2a)/k`

  • The half life period of first order reaction is

    A
    directly proportional to rate constant
    B
    independent of initial concentration
    C
    depends on the concentration
    D
    dependent on the rate constant

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