Solution Found!
A decomposition reaction has a rate constant of 0.0012
Chapter 16, Problem 34P(choose chapter or problem)
QUESTION:
Problem 34P
A decomposition reaction has a rate constant of 0.0012 yr?1. (a) What is the half-life of the reaction? (b) How long does it take for [reactant] to reach 12.5% of its original value?
Questions & Answers
QUESTION:
Problem 34P
A decomposition reaction has a rate constant of 0.0012 yr?1. (a) What is the half-life of the reaction? (b) How long does it take for [reactant] to reach 12.5% of its original value?
ANSWER:
Solution 34P
Step 1
(a) We have to calculate the half-life of the reaction.
A decomposition reaction has a rate constant k = 0.0012 yr
The half-life of the reaction can be calculated as,
t1/2 = ln2/ k
= ln2 / 0.0012 yr
= 577.62 or 5.8 102 yr
Thus half-life of the reaction is 5.8 102 yr.