1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Conversion of cyclopropane to propene

  1. Jun 17, 2009 #1
    1. The problem statement, all variables and given/known data

    We examine the conversion of cyclopropane to propene, a first order process. If we begin with 0.0200 M cyclopropane and find that after 168 s the concentration of propene is 0.00286 M, what is the rate constant, k, at this temperature?

    i used the forumula ln[A]/=-kt
    =(ln 0.00286/0.02)/168=-k
    therefore k=0.0116
    however answer is 9.19 x 10-4/s

    anyhelp would be good.
  2. jcsd
  3. Jun 18, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi geffman1! :smile:

    Aren't you using the formula for 0.0200 M cyclopropane and 0.00286 M cyclopropane? :redface:
  4. Jun 18, 2009 #3
    Re: kinectics

    hey, umm yep??? im confused
  5. Jun 19, 2009 #4


    User Avatar
    Science Advisor
    Homework Helper

    Perhaps I've misunderstood your equation, but the question gives you the concentration of different compounds, and I think you've used an equation that asumes they're the same compound.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook