a) A species undergoes a first-order reaction with a half-life of 36.7 s. If the initial concentration of this species is 2.00 M, how long does it take for the concentration of the species to decrease to 0.200 M? b- The decomposition of N2O5 at 20.0 ºC (293.15 K) has a rate constant of 2.0 × 10-5 s-1.  If the frequency factor (A) for this reaction is 5.8 × 1012 s-1. Calculate the activation energy (Ea) of this reaction in kJ mol-1

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter14: Chemical Kinetics: The Rates Of Chemical Reactions
Section: Chapter Questions
Problem 21PS: At 573 K, gaseous NO2(g) decomposes, forming NO(g) and O2(g). If a vessel containing NO2(g) has an...
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a) A species undergoes a first-order reaction with a half-life of 36.7 s. If the initial concentration of this species is 2.00 M, how long does it take for the concentration of the species to decrease to 0.200 M?

b- The decomposition of N2O5 at 20.0 ºC (293.15 K) has a rate constant of 2.0 × 10-5 s-1.  If the frequency factor (A) for this reaction is 5.8 × 1012 s-1. Calculate the activation energy (Ea) of this reaction in kJ mol-1

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