The reaction (CH3)3CBr + OH(CH3)3COH + Br in a certain solvent is first order with respect to (CH3)3CBr and zero order with respect to OH. In several experiments, the rate constant k was determined at different temperatures. A plot of ln(k) versus 1/T was constructed resulting in a straight line with a slope value of -1.10 x 104 K and y-intercept of 33.5. Assume k has units of s¹. a. Determine the activation energy for this reaction. b. Determine the value of the frequency factor A. c. Calculate the value of k at 25°C.
The reaction (CH3)3CBr + OH(CH3)3COH + Br in a certain solvent is first order with respect to (CH3)3CBr and zero order with respect to OH. In several experiments, the rate constant k was determined at different temperatures. A plot of ln(k) versus 1/T was constructed resulting in a straight line with a slope value of -1.10 x 104 K and y-intercept of 33.5. Assume k has units of s¹. a. Determine the activation energy for this reaction. b. Determine the value of the frequency factor A. c. Calculate the value of k at 25°C.
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
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 66GQ
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Transcribed Image Text:The reaction
(CH3)3CBr + OH →→→→→ (CH3)3COH + Br
in a certain solvent is first order with respect to (CH3)3CBr and
zero order with respect to OH-. In several experiments, the
rate constant k was determined at different temperatures. A
plot of In(k) versus 1/T was constructed resulting in a straight
line with a slope value of -1.10 × 104 K and y-intercept of
33.5. Assume k has units of s¹.
a. Determine the activation energy for this reaction.
b. Determine the value of the frequency factor A.
c. Calculate the value of k at 25°C.
d. Calculate value of k at 300 K using k value obtained for c.
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