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EXAMPLE 13.4 The conversion of cyclopropane to propene in the gas phase is a first-order reaction with a rate constant of 6.7 × 10~ª s¬1 at 500°C. CH2 → CH3-CH=CH2 CH,-CH2 cyclopropane propene (a) If the initial concentration of cyclopropane was 0.25 M, what is the concentration after 8.8 min? (b) How long (in minutes) will it take for the concentration of cyclopropane to decrease from 0.25 M to 0.15 M? (c) How long (in minutes) will it take to convert 74 percent of the starting material?

EXAMPLE 13.4 The conversion of cyclopropane to propene in the gas phase is a first-order reaction with a rate constant of 6.7 × 10~ª s¬1 at 500°C. CH2 → CH3-CH=CH2 CH,-CH2 cyclopropane propene (a) If the initial concentration of cyclopropane was 0.25 M, what is the concentration after 8.8 min? (b) How long (in minutes) will it take for the concentration of cyclopropane to decrease from 0.25 M to 0.15 M? (c) How long (in minutes) will it take to convert 74 percent of the starting material?

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter11: Chemical Kinetics
Section: Chapter Questions
Problem 11.45PAE: The initial concentration of the reactant in a tirst-order reaction A —» products is 0.64 rnol/L and...
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provide the given, required, and do the cancellations.
EXAMPLE 13.4 The conversion of cyclopropane to propene in the gas phase is a first-order reaction with a rate constant of 6.7 × 10~* s¬1 at 500°C. CH2 → CH3-CH=CH2 CH,-CH2 cyclopropane propene (a) If the initial concentration of cyclopropane was 0.25 M, what is the concentration after 8.8 min? (b) How long (in minutes) will it take for the concentration of cyclopropane to decrease from 0.25 M to 0.15 M? (c) How long (in minutes) will it take to convert 74 percent of the starting material?
Transcribed Image Text:EXAMPLE 13.4 The conversion of cyclopropane to propene in the gas phase is a first-order reaction with a rate constant of 6.7 × 10~* s¬1 at 500°C. CH2 → CH3-CH=CH2 CH,-CH2 cyclopropane propene (a) If the initial concentration of cyclopropane was 0.25 M, what is the concentration after 8.8 min? (b) How long (in minutes) will it take for the concentration of cyclopropane to decrease from 0.25 M to 0.15 M? (c) How long (in minutes) will it take to convert 74 percent of the starting material?
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