an energy barrier of height um at x = 0 and then falls in the potential well at b.
Let the left side (-∞0 < x≤ 0) of the potential be u(x)=um (1-2), where o is a small length
scale that called an activation length.
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b
X
+00
In the class, we derived an equation for reaction flux as follows:
[Caeker
Сьека
J=D
Sekat dx
As you see, the forward flux is Jf = D_C₂BT
So ekB¹ dx
u(x)
Calculate this forward reaction flux using the expression for the potential u(x) given above.
Using a simple dimensional analysis, show what is the activation energy. What does the pre-
factor indicate? What would be the velocity of forward reaction?
Fig: 1