Chemical Kinetics Ques 53
53. When a biochemical reaction is carried out in laboratory in the absence of enzyme then rate of reaction obtained is $10^{-6}$ times, then activation energy of reaction in the Presence of enzyme is
[2001]
(a) $\frac{6}{R T}$
(b) Different from $E_a$ obtained in laboratory
(c) $P$ is required
(d) Can’t say anything
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Answer:
Correct Answer: 53.(b)
Solution:
(b) The presence of enzyme (catalyst) increases the speed of reaction by lowering the energy barrier, i.e. a new path is followed with lower activation energy.
Here $E_T$ is the threshold energy. $E_a$ and $E _{a_1}$ is energy of activation of reaction in absence and presence of catalyst respectively.
BETA
