Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsArrhenius EquationMedium2 minQB

ChemistryMediummultiple choice

Which of the following will be the correct conclusion if $E_{af}$ (activation energy of the forward reaction) will be zero?

Answer:

A, B, C, D

Solution:

(a) 100% reactant molecules converted

No energy barrier → all collisions lead to reaction

(b) Normal energy = threshold energy

Threshold energy $E_{t h} = E_{re a c t an t} + E_{a}^{f} = E_{re a c t an t} + 0 = E_{re a c t an t}$

$k = A e^{0} = A$ → independent of T

(d) Rate constant k = Arrhenius constant A

As above, $k = A$ when $E_{a} = 0$

Stream:JEESubject:ChemistryTopic:Chemical KineticsSubtopic:Arrhenius Equation

⏱ 2mℹ️ Source: QB

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