Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsZero Order ReactionsMedium2 minPYQ_2020
ChemistryMediumsingle choice

The rate of a certain biochemical reaction at physiological temperatureToccurs106times faster with enzyme than without. The change in the activation energy upon adding enzyme is:

Options:

Answer:
A
Solution:

K=Ae-E/RT......(1)

106 K=Ae−EcRT…….(2)

On dividing eq, 2 by eq, 1

106=eE−Ec/RT

on taking logarithm both sides

6ln10=E−EcRT

2.303×6=E−EcRT
E−Ec=2.303×(6RT)

ΔEa=Ec−E=−2.303×6RT

Stream:JEESubject:ChemistryTopic:Chemical KineticsSubtopic:Zero Order Reactions
⏱ 2mℹ️ Source: PYQ_2020

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