Home

Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsExperimental determination of order of reactionMedium2 minQB

ChemistryMediumsingle choice

Passage / Comprehension

In order to experimentally determine the order, the initial rate method can be used. Once the order is determined, the integrated rate law can be obtained by using the concentration of reactants. Based on this information and the data given below:

Answer the questions that follow.

Reaction: A(g) + B(g) → C(g)

What is overall order of reaction

Options:

Answer:

Solution:

$r = k [A]^{x} [B]^{y}$ .

$2 \times 1 0^{- 2} = k [1 0^{- 2}]^{x} [3 \times 1 0^{- 3}]^{y}$ ...........(1)

$4 \times 1 0^{- 2} = k [2 \times 1 0^{- 2}]^{x} [3 \times 1 0^{- 3}]^{y}$ ... (2)

$8 \times 1 0^{- 2} = k [2 \times 1 0^{- 2}]^{x} [6 \times 1 0^{- 3}]^{y}$ ....(3)

Divide (2) by (1):

$2 = 2^{x}$

$x = 1$

Similarly, divide (3) by (2):

$2 = 2^{y}$

$y = 1$

So, the overall order of reaction = $1 + 1 = 2$ .

Stream:JEESubject:ChemistryTopic:Chemical KineticsSubtopic:Experimental determination of order of reaction

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...