Tuesday
September 2, 2014

Homework Help: chemistry

Posted by Anna on Thursday, April 22, 2010 at 8:10pm.

Need some help. have the A part of the question but do not know how to set B or C.
Butadiene (C4H6) reacts with itself to form a dimer with the formula C8H12. The reaction is second order in butadiene. If the rate constant at a particular temp is 0.04/(M s) and the initial concentration of butadiene is 0.02M
A. what is its molarity after a reaction time of 1.00 h?
60min x 60 sec= 3600s
1/A = 0.04M/s(3600s)+1/0.02
1/A = 144 + 50
1/A = 194
A = 1/194
=5.2x10^-3M

B. what is the time in hours when butadiene concentration reaches a value of 0.002 M?
C. What is the half life of the reaction?

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