Given the data in Figure 2, answer the following questions. You may refer to the color wheel and the color/wavelength chart on the cover sheet. n Values Concentration LH Relationship Between Concentration and Absorbtion 0.70- (c.u./L) Absorbance 5.000 0.289 0.65- 10.000 0.464 15.000 0.638 20.000 0.709 0.60- 0.55- Linear mc+b m =0.0286 0.50- b =0.167 r=0 985 0.45- 0.40 - 323 nm 0.35- 0.30- Unknown Concentration Concentration 0.25- (c.u./L) Absorbance 10 13 15 18 20 0.444 Concentration (c.u./L) Figure 2: Determination of an Unknown Solution Concentration What is the concentration of the unknown solution in c.u./L (color units per liter) а. a. 9.68 b. 15.52 c. 9.01 d. 12.87 Absorbance

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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Short Answer 1a. Question shown in picture.
Short answer/problems. Show your work, use correct significant figures/units and use complete
sentences (where appropriate).
1.
Given the data in Figure 2, answer the following questions. You may refer to the color wheel and
the color/wavelength chart on the cover sheet.
n Values
Concentration
0.70-
Relationship Between Concentration and Absorbtion
(c.u./L)
Absorbance
5.000
0.289
0.65-
10.000
0.464
15.000
0.638
20.000
0.709
0.60 -
0.55-
Linear
mc+b
m = 0.0286
b = 0.167
0.50 -
r= 0.985
0.45-
0.40 -
523 nm
0.35-
0.30 -
Unknown
Concentration
Concentration
0.25-
(c.u./L)
Absorbance
10
13
15
18
20
0.444
Concentration
(c.u./L)
Figure 2: Determination of an Unknonn Solution Comcentration
What is the concentration of the unknown solution in c.u./L (color units per liter)
а.
a. 9.68
b. 15.52
с. 9.01
d. 12.87
Absorbance
Transcribed Image Text:Short answer/problems. Show your work, use correct significant figures/units and use complete sentences (where appropriate). 1. Given the data in Figure 2, answer the following questions. You may refer to the color wheel and the color/wavelength chart on the cover sheet. n Values Concentration 0.70- Relationship Between Concentration and Absorbtion (c.u./L) Absorbance 5.000 0.289 0.65- 10.000 0.464 15.000 0.638 20.000 0.709 0.60 - 0.55- Linear mc+b m = 0.0286 b = 0.167 0.50 - r= 0.985 0.45- 0.40 - 523 nm 0.35- 0.30 - Unknown Concentration Concentration 0.25- (c.u./L) Absorbance 10 13 15 18 20 0.444 Concentration (c.u./L) Figure 2: Determination of an Unknonn Solution Comcentration What is the concentration of the unknown solution in c.u./L (color units per liter) а. a. 9.68 b. 15.52 с. 9.01 d. 12.87 Absorbance
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