The rate of a first-order reaction is followed by spectroscopy,monitoring the absorbance of a colored reactant at 520 nm.The reaction occurs in a 1.00-cm sample cell, and the onlycolored species in the reaction has an extinction coefficientof 5.60 x 103 M-1 cm-1 at 520 nm. (a) Calculate the initialconcentration of the colored reactant if the absorbance is0.605 at the beginning of the reaction. (b) The absorbancefalls to 0.250 at 30.0 min. Calculate the rate constant inunits of s - 1. (c) Calculate the half-life of the reaction.(d) How long does it take for the absorbance to fall to 0.100?
The rate of a first-order reaction is followed by spectroscopy,monitoring the absorbance of a colored reactant at 520 nm.The reaction occurs in a 1.00-cm sample cell, and the onlycolored species in the reaction has an extinction coefficientof 5.60 x 103 M-1 cm-1 at 520 nm. (a) Calculate the initialconcentration of the colored reactant if the absorbance is0.605 at the beginning of the reaction. (b) The absorbancefalls to 0.250 at 30.0 min. Calculate the rate constant inunits of s - 1. (c) Calculate the half-life of the reaction.(d) How long does it take for the absorbance to fall to 0.100?
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...
Related questions
Question
The rate of a first-order reaction is followed by spectroscopy,
monitoring the absorbance of a colored reactant at 520 nm.
The reaction occurs in a 1.00-cm sample cell, and the only
colored species in the reaction has an extinction coefficient
of 5.60 x 103 M-1 cm-1 at 520 nm. (a) Calculate the initial
concentration of the colored reactant if the absorbance is
0.605 at the beginning of the reaction. (b) The absorbance
falls to 0.250 at 30.0 min. Calculate the rate constant in
units of s - 1. (c) Calculate the half-life of the reaction.
(d) How long does it take for the absorbance to fall to 0.100?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 6 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY