When measuring iron in river water by spectrophotometry using the ferrozine reaction that isdescribed in the class notes, a student finds that they cannot distinguish their samples from noise(i.e. they are below the limit of detection) when they use a 1-cm cuvette. The student makes thedecision to use a 5-cm cuvette in their method instead.a) By how much should the student expect their sample measurements to increase by?Why?b) Will their reagent blank also increase by the same amount? Why or why not?3.

(a) In spectrophotometry, the absorbance is directly proportional to the concentration of analyte…

Answered: a) By how much should the student…

a) By how much should the student expect their sample measurements to increase by? Why? b) Will their reagent blank also increase by the same amount? Why or why not?

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

When measuring iron in river water by spectrophotometry using the ferrozine reaction that is
described in the class notes, a student finds that they cannot distinguish their samples from noise
(i.e. they are below the limit of detection) when they use a 1-cm cuvette. The student makes the
decision to use a 5-cm cuvette in their method instead.
a) By how much should the student expect their sample measurements to increase by?
Why?
b) Will their reagent blank also increase by the same amount? Why or why not?
3.

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