First, how do I find the half life if I was given that Solution A (0.008 M) took
ID: 823029 • Letter: F
Question
First, how do I find the half life if I was given that Solution A (0.008 M) took 165 seconds to change color and Solution B (0.04 M) took 178 seconds to change color and the average temperature was 56.12 C? Is the reaction first order or second order?
Then my experient data shows:
Initial T Final T Initial time Final time Half-Life
Run 1 86C 85.2 0 75sec _____
Run 2 76C 74.8 0 96sec _____
Run 3 66.2C 64.5 0 172sec _____
Run 4 46.2C 45.9 0 842sec _____
Run 5 56.13
My lab told me to take the average of the two half-lives in the previous question and use that for the value of the half-life at that temperature. How do I find the half-life of these other Runs? How would I find:
Avg T (in K) t1/2 k ln k 1/T
Run 1 358.76 _____ _____ _____ _____
Run 5 329.28 _____ _____ _____ _____
And after I find that for all 5 runs, how do I find the Ea?
#2 Whats the order of increasing ability to catalyze the decomposition of H2O2?
____ < _______ < _______ (KI, FeCl1, bovine catalase)
Explanation / Answer
out of time,,, phew
chemed.chem.purdue.edu/genchem/topicreview/bp/ch22/activate.html?
https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&cad=rja&uact=8&ved=0CEQQFjAD&url=http%3A%2F%2Fchemwiki.ucdavis.edu%2FPhysical_Chemistry%2FKinetics%2FReaction_Rates%2FTemperature_Dependence_of_Reaction_Rates%2FArrhenius_Equation%2FActivation_Energy&ei=j70YU8GdN4uErAeCi4HgBQ&usg=AFQjCNEnBuHEnUzA0tHSYWlmjmcauJL-bw&bvm=bv.62577051,d.bmk
www.csun.edu/chem/documents/Kinetics.pdf?
3 links have it all, comment for details n exact solution.
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