Problem: Given that N2O4 is 2nd order for the reaction: N2O4 → 2 NO2 , what is the concentration of N2O4 at 5 min when the rate constant is 0.50 min-1 M-1 and the initial [N2O4] is 0.24 MA. 0.15 MB. 6.7 MC. 0.056 MD. 0.22 ME. 0.19 M

FREE Expert Solution

We’re being asked to determine the rate constant (k) of a second-order reaction:

N2O4 → 2 NO2


The integrated rate law for a second-order reaction is as follows:


1[A]t=kt+1[A]0


where: 

[A]t = concentration at time t

k = rate constant

t = time

[A]0 = initial concentration


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Problem Details

Given that N2O4 is 2nd order for the reaction: N2O4 → 2 NO2 , what is the concentration of N2Oat 5 min when the rate constant is 0.50 min-1 M-1 and the initial [N2O4] is 0.24 M

A. 0.15 M

B. 6.7 M

C. 0.056 M

D. 0.22 M

E. 0.19 M


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