An elementary reaction between A and B is a s | vedclass

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(D) For an elementary reaction,the order of the reaction with respect to each reactant is equal to its stoichiometric coefficient in the balanced chem

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$r = k[A][B]$

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(D) For an elementary reaction,the order of the reaction with respect to each reactant is equal to its stoichiometric coefficient in the balanced chemical equation.Since the reaction is between $A$ and $B$ and is of second order,the sum of the stoichiometric coefficients must be $2$.For an elementary reaction $aA + bB ightarrow 	ext{Products}$,the rate law is $r = k[A]^a[B]^b$.Given that the reaction is elementary and second order,the sum of the powers $a + b = 2$.Option $D$ represents $r = k[A]^1[B]^1$,where $a=1$ and $b=1$,so $a+b=2$.Therefore,the rate equation $r = k[A][B]$ is consistent with an elementary second-order reaction.

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

$P_0 \text{ (mmHg)}$	$250$	$300$
$t_{1/2} \text{ (minutes)}$	$135$	$112.5$

An elementary reaction between $A$ and $B$ is a second order reaction. Which of the following rate equations must be correct?

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

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$P_0 \text{ (mmHg)}$ $250$ $300$
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