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Assertion. In any reaction, the rate of ...

Assertion. In any reaction, the rate of disappearance of a reactant is same as the rate of reaction.
Reason. Both rate of reaction and rate of disappearance of a reactant represent decrease in the concentration of a reactant per unit time.

A

If both assertion and reason are true and reason is the true explanation of the assertion.

B

If both assertion and reason ae true but reason is not the true explanation of the assertion.

C

If assertion is true, but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D
Correct A. Rate of reaction may or may not be equal to rate of disappearance of a reactant. It depends upon the stoichiometric coefficient of the reactant in the balanced chemical equation.
Correct R. Rate of disappearance represents decrease in concentration of a reactant per unit time but rate may or may not.
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Knowledge Check

  • In a reaction A to B the rate of reaction increases two times on increasing the concentration of the reactant four times, then order of reaction is

    A
    0
    B
    2
    C
    `1/2`
    D
    4

  • According to the graph what is the rate of disappearance of the reactant at 10 seconds ?

    A
    `0.025mol*L^(-1)*sec^(-1)`
    B
    `0.050mol*L^(-1).sec^(-1)`
    C
    `0.40mol*L^(-1)*sec^(-1)`
    D
    `0.80mol*L^(-1)*sec^(-1)`

  • Assertion : Order of a reaction with respect to any reactant can be zero, positive negative of fractional. Reason : Rate of a reaction cannot decrease with increase in concentration of a reactant or a product.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.