Beer's Law Plot Absorbance M [Cu*2] unknown: Method a = Method b = %3D

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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Given the data given from the first page, how would I plot a Beer's Law Plot on the second page with the grid

Beer's Law Plot
Absorbance
M
[Cu*2] unknown: Method a =
Method b =
Transcribed Image Text:Beer's Law Plot Absorbance M [Cu*2] unknown: Method a = Method b =
Beer's Law
Beer's Law Plot
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
.02
.04
.06
.08
.1
Concentration (M)
Experimental Data:
[Cu*2]
.100 M
Absorbance
1.20
.080 M
0.97
.060 M
0.70
.040 M
0.50
.020 M
0.25
.000 M
0.00
Absorbance
Transcribed Image Text:Beer's Law Beer's Law Plot 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 .02 .04 .06 .08 .1 Concentration (M) Experimental Data: [Cu*2] .100 M Absorbance 1.20 .080 M 0.97 .060 M 0.70 .040 M 0.50 .020 M 0.25 .000 M 0.00 Absorbance
Expert Solution
Step 1

Lambert-Beer’s law is one of the most important rules in the chapter of photochemistry. The mathematical form of the law is given as follows:

A=εcl

Here, ‘A’ is the absorbance, ‘c’ is the concentration of the sample solution, and ε is a constant known as molar absorptivity coefficient, and ‘l’ is the path length.

From, this relation it is clear that the absorbance is directly proportional to the concentration of the sample solution.

That means if the concentration increases, the absorbance will increase and vice-versa.

Thus, if we plot absorbance (along y axis) vs. concentration (along x axis), we are expected to get a straight line passing through the origin.

 

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