For a reaction $A + B \to \text{Products}$,the rate law is: $\text{Rate} = k[A][B]^{3/2}$. Can the reaction be an elementary reaction? Explain.
(N/A) An elementary reaction is a single-step process where the order of the reaction is equal to the sum of the stoichiometric coefficients of the reactants.
For an elementary reaction,the order must be an integer (usually $1, 2, \text{or } 3$).
In the given rate law,$\text{Rate} = k[A]^1[B]^{3/2}$,the overall order of the reaction is $1 + 3/2 = 5/2 = 2.5$.
Since the order of the reaction is fractional,it cannot be an elementary reaction.
For an elementary reaction,the order must be an integer (usually $1, 2, \text{or } 3$).
In the given rate law,$\text{Rate} = k[A]^1[B]^{3/2}$,the overall order of the reaction is $1 + 3/2 = 5/2 = 2.5$.
Since the order of the reaction is fractional,it cannot be an elementary reaction.
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Similar Questions
The experimental data for the reaction $2A + B_2 \longrightarrow 2AB$ is given below:
Exp. $[A] \ (mol \ L^{-1})$ $[B_2] \ (mol \ L^{-1})$ Rate $(mol \ L^{-1} \ S^{-1})$ $1$ $0.50$ $0.50$ $1.6 \times 10^{-4}$ $2$ $0.50$ $1.00$ $3.2 \times 10^{-4}$ $3$ $1.00$ $1.00$ $3.2 \times 10^{-4}$
Determine the rate law for the reaction.
| Exp. | $[A] \ (mol \ L^{-1})$ | $[B_2] \ (mol \ L^{-1})$ | Rate $(mol \ L^{-1} \ S^{-1})$ |
|---|---|---|---|
| $1$ | $0.50$ | $0.50$ | $1.6 \times 10^{-4}$ |
| $2$ | $0.50$ | $1.00$ | $3.2 \times 10^{-4}$ |
| $3$ | $1.00$ | $1.00$ | $3.2 \times 10^{-4}$ |
Determine the rate law for the reaction.
Difficult
View SolutionFor the reaction $2A + B \rightarrow \text{Product}$,the rate constant $(K)$ is $2.5 \times 10^{-5} \text{ L mol}^{-1} \text{ s}^{-1}$ after $15 \text{ s}$,$2.60 \times 10^{-5} \text{ L mol}^{-1} \text{ s}^{-1}$ after $30 \text{ s}$,and $2.55 \times 10^{-5} \text{ L mol}^{-1} \text{ s}^{-1}$ after $50 \text{ s}$. What is the order of the reaction?
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View SolutionFor an elementary reaction,which of the following is correct?
The molecularity of the reaction of inversion of sugar is:
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View SolutionThe alkaline hydrolysis of an ester is a ........ reaction.
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