Homework Sourse4 The reaction is second order in A When A0 0100 M the reac
4. The reaction
is second order in A. When [A]0 = 0.100 M, the reaction is 20.0% complete in 35.9 minutes. Calculate the value of the rate constant (in L/min·mol).
A)
6.96 10–2
B)
5.57 10–4
C)
1.57
D)
1.11
E)
none of these
4. The reaction
is second order in A. When [A]0 = 0.100 M, the reaction is 20.0% complete in 35.9 minutes. Calculate the value of the rate constant (in L/min·mol).
A)
6.96 10–2
B)
5.57 10–4
C)
1.57
D)
1.11
E)
none of these
4. The reaction
is second order in A. When [A]0 = 0.100 M, the reaction is 20.0% complete in 35.9 minutes. Calculate the value of the rate constant (in L/min·mol).
A)
6.96 10–2
B)
5.57 10–4
C)
1.57
D)
1.11
E)
none of these
Solution
Kt = [1/[A]t - 1/[A]
t = 35.9 minutes
20% complete meaning means 80% remaining
K*35.9 = [ 1/0.8*0.1 - 1/0.1]
K*35.9 = 12.5-10
K = 2.5/35.9 = 0.0696 = 6.96*10^-2M^-1 min^-1
A)
6.96 10–2
![4. The reaction is second order in A. When [A]0 = 0.100 M, the reaction is 20.0% complete in 35.9 minutes. Calculate the value of the rate constant (in L/min·m](/WebImages/45/4-the-reaction-is-second-order-in-a-when-a0-0100-m-the-reac-1142837-1761613371-0.webp "4. The reaction is second order in A. When [A]0 = 0.100 M, the reaction is 20.0% complete in 35.9 minutes. Calculate the value of the rate constant (in L/min·m")
![4. The reaction is second order in A. When [A]0 = 0.100 M, the reaction is 20.0% complete in 35.9 minutes. Calculate the value of the rate constant (in L/min·m](/WebImages/45/4-the-reaction-is-second-order-in-a-when-a0-0100-m-the-reac-1142837-1761613371-1.webp "4. The reaction is second order in A. When [A]0 = 0.100 M, the reaction is 20.0% complete in 35.9 minutes. Calculate the value of the rate constant (in L/min·m")
