Problem: The reactant concentration in a first-order reaction was 7.60×10−2 M after 35.0 s and 5.50×10−3 M after 85.0 s . What is the rate constant for this reaction?

FREE Expert Solution

The integrated rate law for a first order reaction is as follows:


ln[A]t = -kt + ln[A]0


where:

[A]t = concentration at time t 

k = rate constant

t = time, [A]0 = initial concentration


The reactant concentration in a first-order reaction was 7.60×10−2 M after 35.0 s and 5.50×10−3 M after 85.0 s .


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Problem Details

The reactant concentration in a first-order reaction was 7.60×10−2 M after 35.0 s and 5.50×10−3 M after 85.0 s . 

What is the rate constant for this reaction?


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