Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter11: Chemical Kinetics: Rates Of Reactions
Section: Chapter Questions
Problem 40QRT
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Question
After 53.0 min, 16.0% of a compound has decomposed. What is the half‑life of this reaction assuming first‑order kinetics?
Expert Solution
Step 1
According to the question, After 53.0 min, 16.0% of a compound has decomposed. We need to determine what is the half‑life of this reaction assuming first‑order kinetics.
For first order reaction:
k = (2.303/t)*log(a/(a-x))
We have,
x= 16
a= 100
(a-x)= 100-16 = 84
t= 53 minutes.
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