Select the incorrect option :

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Question

(A) The rate law of a chemical reaction is determined experimentally and depends on the mechanism of the reaction. Species appearing in the balanced c

Vedclass · Accepted Answer

Each species appearing in balanced chemical equation must appear in kinetic rate law.

Vedclass · Answer

(A) The rate law of a chemical reaction is determined experimentally and depends on the mechanism of the reaction. Species appearing in the balanced chemical equation do not necessarily appear in the rate law,especially if they are intermediates or if the reaction is complex. Therefore,option $A$ is incorrect. Bimolecular elementary reactions involve the collision of two particles,making them second order,so $B$ is correct. Alkaline hydrolysis of an ester (saponification) follows second-order kinetics,so $C$ is correct. For elementary reactions,the order and molecularity are indeed the same,so $D$ is correct.

$p \ (mm \ Hg)$	$50$	$100$	$200$	$400$
Relative $t_{1/2} \ (s)$	$4$	$2$	$1$	$0.5$

Similar Questions

$A$ student has studied the decomposition of a gas $AB_3$ at $25^{\circ} C$. He obtained the following data.

$p \ (mm \ Hg)$ $50$ $100$ $200$ $400$

Relative $t_{1/2} \ (s)$ $4$ $2$ $1$ $0.5$

The order of the reaction is

What is the order of a reaction which has a rate expression $\text{rate} = K[A]^{3/2}[B]^{-1}$?

For the reaction $2A + B \rightarrow \text{Product}$,the following mechanism is given. What is the order of the reaction?
$2A \rightleftharpoons A_2$ (fast)
$A_2 + B \rightarrow P$ (slow)

At what concentration of the reactant (in $M$) are the rate constants for first-order,second-order,and third-order reactions equal?

The correct difference between $1^{st}$-order and $2^{nd}$-order reaction is that:

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