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Assertion (A) : The order of a reaction ...

Assertion (A) : The order of a reaction can be zero or a fraction .
Reason (R) : Order cannot be determined from the balanced equation.

A

(A) and (R) both are correct statements and (R) is correct explanation for (A).

B

(A) and (R) both are correct statements and (R) is not correct explanation for (A).

C

(A) is correct statement but (R) is wrong statement.

D

(A) is wrong statement but (R) is correct statement .

Text Solution

Verified by Experts

The correct Answer is:
B
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Rate law cannot be determined from balanced chemical equation if-

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Knowledge Check

  • Rate law cannot be determined from balanced chemical equation if-

    A
    reverse reaction is involved
    B
    it is an elementary reaction
    C
    it is a sequence of elementary reactions
    D
    any of the reactants is in excess

  • Assertion (A) : The order and molecularity of the reaction is the same. Reason (R) : Order is determined experimentally. Molecularity is the sum of all the stoichiometric coefficients of the rate- determining elementary step.

    A
    (A) and (R) both are correct statements and (R) is correct explanation for (A).
    B
    (A) and (R) both are correct statements and (R) is not correct explanation for (A).
    C
    (A) is correct statement but (R) is wrong statement.
    D
    (A) is wrong statement but (R) is correct statement .

  • The unit of rate constant for a zero order reaction is -

    A
    `"mol.L"^(-1).s^(-1)`
    B
    `"L.mol"^(-1).s^(-1)`
    C
    `L^(2)."mol"^(-1).s^(-1)`
    D
    `s^(-1)`