List of top Chemistry Questions on Order of reaction asked in CBSE CLASS XII

Reactions of which order show rate independent of concentration of reactant? Give one example.

Assertion (A): For complex reactions, order of reaction is given by the fast step.
Reason (R): Order of reaction is determined experimentally.

Determine the order of reaction with respect to \( H_2O_2 \), \( I^- \) and overall order of reaction.

Assertion (A) : For complex reaction, order of reaction is given by the slowest step.
Reason (R) : Order of a reaction is an experimental quantity.

Reactions of which order will show the rate to be independent of the concentration of the reactant ? Give one example of this order.

Write the unit of (i) second order reaction and (ii) zero order reaction.

The order for the given reaction is:
$A + 2B \rightarrow Products$
$Rate = k[A]^{\frac{1}{2}}[B]^1$

The order for the given reaction is :
\( \text{A} + 2\text{B} \rightarrow \text{Products} \)
\( \text{Rate} = k[\text{A}]^{1/2} [\text{B}]^1 \)

The rate of a reaction is doubled when the concentration of the reactant is doubled. The order of the reaction is :

Define order of a reaction.

For a reaction A + B $\rightarrow$ Products, the rate law is : \[ \text{Rate} = k[A]^{\frac{3}{2}}[B] \] Write the overall order of the reaction. Can this reaction be an elementary reaction ? Give reason in support of your answer.

Assertion (A) : Order of reaction is not applicable for elementary reaction but applicable for complex reaction. Reason (R) : Order of reaction is an experimental quantity.

For a reaction \(A+B\rightarrow\) products, the rate law is: \[ Rate=k[A][B]^{\frac{3}{2}} \] Write the overall order of the reaction. Can this reaction be an elementary reaction? Give reason.

Assertion (A): Order of reaction is applicable to elementary as well as complex reactions. Reason (R): Order of a reaction is an experimental quantity.

Following reaction takes place in one step:

\(2A + B \rightarrow 2C\)

How will the rate of above reaction change if the volume of the reaction vessel is decreased to one third of its original volume? Will there be any change in the order of reaction with the reduced volume?

For a reaction A + B → Products, the rate law is $\mathrm{Rate = k[A][B]^{3/2}}$. Write the overall order of the reaction. Can this reaction be an elementary reaction ? Give reason in support of your answer.

Assertion (A): Order of reaction is applicable to elementary as well as complex reactions.
Reason (R): For a complex reaction, molecularity has no meaning.