What is the rate constant at 25.0 ∘C∘C based on the data collected for trial B?

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 11.55PAE: The following rate constants were obtained in an experiment in which the decomposition of gaseous...
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The following data were acquired in an iodination experiment involving acetone. Reaction times are for the disappearance of iodine.

 

Trial Volume of 0.0010 M I2M I2
(mLmL)
Volume of 0.050 M HClM HCl
(mLmL)
Volume of 1.0 MM acetone
(mLmL)
Volume of water
(mLmL)
Temperature
(∘C∘C)
Reaction time
(ss)
A 5.0 10.0 10.0 25.0 25.0 130
B 10.0 10.0 10.0 20.0 25.0 249
C 10.0 20.0 10.0 10.0 25.0 128
D 10.0 10.0 20.0 10.0 25.0 131
E 10.0 10.0 10.0 20.0 42.4

38

What is the rate constant at 25.0 ∘C∘C based on the data collected for trial B?

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