To determine the reaction rate for a pseudo first-order reaction we must take into consideration the following equation: Af = A. + (Ao – A)e¬kt Where: • k = first order rate constant = absorption value at time = infinity = absorption value at time = zero Ao • t = the reaction time in seconds At = absorption value at any time = t %3D Rearranging the equation above, we obtain the following: In(A – A.) = -kt + In (A, – A∞) Using the absorption data below acquired during the hydrolysis of p-nitrophenyl acetate in aqueous solution at 50°C determine the rate constant for this reaction. Assume that Aoo=1.750 **Hint: you cannot take the logarithm of a negative number. Take the logarithm of the absolute value of At - A.

To determine the reaction rate for a pseudo first-order reaction we must take into consideration the following equation: Af = A. + (Ao – A)e¬kt Where: • k = first order rate constant = absorption value at time = infinity = absorption value at time = zero Ao • t = the reaction time in seconds At = absorption value at any time = t %3D Rearranging the equation above, we obtain the following: In(A – A.) = -kt + In (A, – A∞) Using the absorption data below acquired during the hydrolysis of p-nitrophenyl acetate in aqueous solution at 50°C determine the rate constant for this reaction. Assume that Aoo=1.750 **Hint: you cannot take the logarithm of a negative number. Take the logarithm of the absolute value of At - A.

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

Chapter12: Chemical Kinetics

Section: Chapter Questions

Problem 106CWP: A certain reaction has the form aAProducts At a particular temperature, concentration versus time...

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