For conversion of compound A → B , the rate constant of the reaction was found to be 4 . 6 × 10 - 5 Lmol - 1 s - 1 . The order of the reaction is _____ .

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Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsZero Order ReactionsEasy2 minPYQ_2023

ChemistryEasynumerical

For conversion of compound $A \to B$ , the rate constant of the reaction was found to be $4.6 \times 10^{- 5} Lmol {}^{- 1} s^{- 1}$ . The order of the reaction is _____ .

Answer:

2.00

Solution:

Rate(r) $= k {[A]}^{n}$

$\Rightarrow k = \frac{rate}{{[A]}^{n}}$

Unit of rate constant is related to order of reaction $(n)$ by the relation: ${(conc .)}^{1 - n} {time}^{- 1}$

Thus,
$\begin{array}{r} \Rightarrow ({Lmol}^{- 1}) \Rightarrow 1 - n = - 1 \\ n = 2 \end{array}$

Stream:JEESubject:ChemistryTopic:Chemical KineticsSubtopic:Zero Order Reactions

⏱ 2mℹ️ Source: PYQ_2023

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