Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsZero Order ReactionsMedium2 minPYQ_2020

ChemistryMediumsingle choice

The rate constant $(k)$ of a reaction is measured at different temperature $(T)$ , and the data are plotted in the given figure. the activation energy of the reaction in ${kJmol}^{- 1}$ is : $(R$ is gas constant)

Options:

Answer:

Solution:

$k = {Ae}^{- Ea / RT}$
In $k = I n A - (\frac{E_{a}}{R}) \frac{1}{T}$

In $k = I n A - (\frac{E_{a}}{R \times 10^{3}}) \frac{10^{3}}{T}$

Slope of graph

$= \frac{- E_{a}}{R \times 10^{3}} = \frac{- 10}{5}$

$E_{a} = 2 R \times 10^{3} J$

$E_{a} = 2 R \times k J$

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

⏱ 2mℹ️ Source: PYQ_2020

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