Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsZero Order ReactionsMedium2 minPYQ_2019

ChemistryMediumsingle choice

Consider the given plots for a reaction obeying Arrhenius equation $(0 ° C < T < 300 ° C) :$ ( $K$ and $E_{a}$ are rate constant and activetion energy, respectively )

(I)

(II)

Options:

Answer:

Solution:

$K = A e^{- E_{a} / R T}$

$K$ decreases exponentially with $E_{a}$

$∴$ The first graph is correct.

But temperature is given in $^{o} C$
So, $K \neq 0$ at $0^{o} C$ .

$∴$ For temperature between $0^{o} C$ and $300^{o} C,$ the graph will come like (II)

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

⏱ 2mℹ️ Source: PYQ_2019

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