Note that our data is ABSORBANCE versus time, not CONCENTRATION versus time. Absorbance and concentration are proportional according to Beer's law A = abc or A = ElC so the data is still useful. However, extracting the rate constant from a linear plot may be annoying if the rate constant is supposed to incorporate units of concentration. For example, if the rate constant should be 0.25/s then there is no problem, but if the rate constant should be 0.25 M/s then how can we get the molar unit directly from a graph involving ABSORBANCE and time? We can't. We'd need to involve Beer's law. Hopefully we won't need to do that. Identify the symbols used in Beer's law. A molar absorbtivity/ extinction coefficient a molar concentration b absorbance path length through the sample с

Note that our data is ABSORBANCE versus time, not CONCENTRATION versus time. Absorbance and concentration are proportional according to Beer's law A = abc or A = ElC so the data is still useful. However, extracting the rate constant from a linear plot may be annoying if the rate constant is supposed to incorporate units of concentration. For example, if the rate constant should be 0.25/s then there is no problem, but if the rate constant should be 0.25 M/s then how can we get the molar unit directly from a graph involving ABSORBANCE and time? We can't. We'd need to involve Beer's law. Hopefully we won't need to do that. Identify the symbols used in Beer's law. A molar absorbtivity/ extinction coefficient a molar concentration b absorbance path length through the sample с

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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