The Richard Stockton College of New Jersey
Chemistry Program, School of Natural Sciences and Mathematics
PO Box 195, Pomoma, NJ
CHEM 3410: Physical Chemistry I โ Fall 2008
Homework 10
Due in Class: November 19, 2008
1. Given data on [A(t)] for three different reactions (posted on the course blog in an Excel document),
determine the reaction order and the rate constant. The reactions have the general form of:
AโB
Plot the appropriate graphs to find the information that you are looking for in each case. Along
with your results, please submit the graphs.
2. A solution of our favorite chemical A is mixed with an equal volume of a solution of B containing
the same number of moles, and the reaction A+BโCtakes place. At the end of one hour, 50%
of A has reacted. How much A will be left unreacted at the end of 3 hours if the reaction is:
(a) first order in A and zero order in B;
(b) first order in both A and B;
(c) zero order in both A and B?
3. Using the following data for the reaction A+Bk
โโ products:
[A]o(M) [B]o(M) Initial Rate (M sec1)
1.2ร10โ43.0ร10โ55ร10โ4
2.4ร10โ46.0ร10โ54ร10โ3
4.8ร10โ46.0ร10โ58ร10โ3
(a) Determine the order of the reaction with respect to A and B and the overall order pof the
reaction.
(b) Determine the rate constant for the reaction.
(c) Write a possible kinetic mechanism for the reaction that accounts for the observed rate law.