If the rate constant for the decomposition reaction of cyclobutane into ethylene is2.08 x 10-2 s¹ at a certain temperature, how many seconds are required for theinitial concentration (2.75) to decrease to 1.40? (Hint: What is the rate order basedon k's units?)Your Answer:Answerunits

Answered: If the rate constant for the…

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

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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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If the rate constant for the decomposition reaction of cyclobutane into ethylene is
2.08 x 10-2 s¹ at a certain temperature, how many seconds are required for the
initial concentration (2.75) to decrease to 1.40? (Hint: What is the rate order based
on k's units?)
Your Answer:
Answer
units

Expert Solution

Step 1

First-order reaction: The unit of the rate constant is s^-1, which states that the reaction is a first-order reaction. The rate of the first-order reaction depends only on one reactant. According to the first-order kinetics the rate constant of the first-order reaction is given by:

Where k = rate constant = 2.08x 10^-2 s^-1

t = time = ?

a = initial concentration of the reactant = 2.75 M

a-x = remaining concentration of the reactant after t time = 1.40 M

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