Answered: The isomerization reaction CH3NC →…

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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Question

The isomerization reaction CH₃NC → CH₃CN obeys the first-order rate law,

rate = k[CH₃NC],

in the presence of an excess of argon. Measurement at 500. K reveals that in 485 seconds, the concentration of CH₃NC has decreased to 73% of its original value. Calculate the rate constant (k) of the reaction at 500. K.

s⁻¹

(The integrated form for the first-order rate law can be written in the general terms

ln[A]_t − ln[A]₀ = −kt,

where

[A]₀

is the initial concentration of reactant A,

[A]_t

is the concentration of A at time t, and k is the rate constant.)

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