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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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What is meant by a zero order reaction? Give an example of such a reaction. Establish the integrated rate equation for a zero order reaction involving a single reactant. How can the rate constant be determined using this equation?

State one fractional order reaction.

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)`

    • Similar Questions

    Explore conceptually related problems

    For a zero order reaction, 2A+BrarrC write its rate equation.

    Will the molecularity of a zero order reaction be zero? Explain.

    If the concentration of a reactant A of a reaction is tripled, the rate of the reaction increases by 27 times. Determine the order of the reaction.

    Which is correct about zero order reaction?

    Assertion : The order of reaction may be defined as the sum of the powers to which the concentration terms are raised in order to determine the rate of reaction gives the total order of reaction. Reason : The number of molecules whose concentrations determine the rate of reaction at a given temperature is called order of reaction.

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