Problem: Cyclopropane rearranges to form propene in the gas phase.The reaction is first order in cyclopropane and has a measured rate constant of 3.36 x 10-5 s-1 at 720 K. If the initial cyclopropane concentration is 0.0505 M, what is the cyclopropane concentration after 251 minutes?

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We are asked to determine the amount of the cyclopropane concentration after 251 minutes


The integrated rate law for a 1st-order reaction is as follows:


ln[N]t = -kt + ln[N]0


where rate= rate at time t, k = rate constant, t = time, initial rate = starting rate

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Problem Details

Cyclopropane rearranges to form propene in the gas phase.

Ball and stick figure for cyclopropane shown rearranging to form propene. -CH2CH2CH2- rearanges to form CH3CHCH2.

The reaction is first order in cyclopropane and has a measured rate constant of 3.36 x 10-5 s-1 at 720 K. If the initial cyclopropane concentration is 0.0505 M, what is the cyclopropane concentration after 251 minutes?


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