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Determine the order of the reaction invo...

Determine the order of the reaction involving decomposition of ammonia on the surface of platinum at a high pressure. Given: the value of rate constant for the reaction is, `k=2.5xx10^(-4)"mol.L"^(-1).s^(-1)`.

Text Solution

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Unit of rate constant of `n^(th)` order reaction: `("mol.L"^(-1))^((1-n)).s^(-1) " where"nge0`
Here unit of k is `mol.L^(-1).s^(-1)`
Therefore , the order of the reaction is zero.
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Knowledge Check

  • A reaction , 2Ararr product , follows a zero order kinetics. If the rate constant of the reaction is 4.0xx10^(-4)"mol.L"^(-1).s^(-1) , then the rate of disappearance of A is -

    A
    `4.0xx10^(-4)"mol.L"^(-1).s^(-1)`
    B
    `2.0xx10^(-4)"mol.L"^(-1).s^(-1)`
    C
    `8.0xx10^(-4)"mol.L"^(-1).s^(-1)`
    D
    `1.2xx10^(-3)"mol.L"^(-1).s^(-1)`

  • The activation energy of a reaction is zero . If the rate constant of the reaction at 300K is 3.2xx10^(6)s^(-1) , then at 316K the rate constant of the reaction will be -

    A
    `3.2xx10^(12)s^(-1)`
    B
    `6.4xx10^(6)s^(-1)`
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    D
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