How long would it take for the reactant of a first-order reaction todecrease to one-half its initial concentration if the rate constant is4.5 X 10-3 s-1 and the initial concentration of the reactant is a. 1.0 M?                b. 0.50 M?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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How long would it take for the reactant of a first-order reaction to
decrease to one-half its initial concentration if the rate constant is
4.5 X 10-3 s-1 and the initial concentration of the reactant is


a. 1.0 M?                b. 0.50 M?

Expert Solution
Introduction

This problem can be solved by using the rate law for the first order reaction which is given as ;k=2.303tlogA0A               Where k is the rate constant,t is the time,A0 is initial concentration and A is final concentration. 

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