Answered: A certain first order reaction has k =…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A certain first order reaction has k = 2.51 s^-1 . If the initial concentration of the reactant is 6.50 M, how much will be left after two half lives (in M)? Give your answer to three sig figs

Expert Solution

Step 1

Given that

The first order rate constant k = 2.51 s^-1 .

the initial concentration of the reactant = 6.50 M

We know that

For the first order reaction,

$k = \frac{1}{t} \ln \frac{N_{0}}{N}$

where k = rate constant

t = time

N₀ = initial concentration of the reactant

N= concentration of the reactant after time t

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