The following table contains some data showing the effect of molar concentration of a solution on the absorbance (optical density) reading from a spectrophotometer. Concentration (M) 0.13 0.28 0.43 0.58 0.73 0.88 1.03 1.18 1.33 1.48 Optical Density No Does the solution in your graph follow Beer's Law? What is the concentration of a solution that has an Optical Density of 0.21? (Give units in your answer). 0.21M Submit Answer Incorrect. Tries 37/99 Previous Tries 0.18 0.38 0.56 0.71 0.85 0.96 1.06 To assist in graphing, right click on this excel spreadsheet file, save it to your computer, and open it in Excel. Enter the above data in the appropriate spaces in the spreadsheet. Select the graph that is created, and print it in portrait orientation. What is the concentration of a solution that has an Optical Density of 0.91? (Give units in your answer). 0.81 M 1.13 1.19 1.23 Use this graph as a model for drawing your own graph. If the line does not cover the entire vertical range of the Y axis, you should change your Y axis values so the graph covers most of the page and values can be read from the graph with greater precision. Use your graph to answer the following questions. The Absorbance, or Optical Density, of a solution for a particular wavelength of light is given by log(Io/I), where I, is the incident light on a sample and I is the transmitted light. Beer's Law states that the the Optical Density of a substance in solution is directly proportional to its concentration. Not all substances follow Beer's Law, but a calibration graph of Optical Density versus concentration can still be used to measure concentrations of unknown solutions.
The following table contains some data showing the effect of molar concentration of a solution on the absorbance (optical density) reading from a spectrophotometer. Concentration (M) 0.13 0.28 0.43 0.58 0.73 0.88 1.03 1.18 1.33 1.48 Optical Density No Does the solution in your graph follow Beer's Law? What is the concentration of a solution that has an Optical Density of 0.21? (Give units in your answer). 0.21M Submit Answer Incorrect. Tries 37/99 Previous Tries 0.18 0.38 0.56 0.71 0.85 0.96 1.06 To assist in graphing, right click on this excel spreadsheet file, save it to your computer, and open it in Excel. Enter the above data in the appropriate spaces in the spreadsheet. Select the graph that is created, and print it in portrait orientation. What is the concentration of a solution that has an Optical Density of 0.91? (Give units in your answer). 0.81 M 1.13 1.19 1.23 Use this graph as a model for drawing your own graph. If the line does not cover the entire vertical range of the Y axis, you should change your Y axis values so the graph covers most of the page and values can be read from the graph with greater precision. Use your graph to answer the following questions. The Absorbance, or Optical Density, of a solution for a particular wavelength of light is given by log(Io/I), where I, is the incident light on a sample and I is the transmitted light. Beer's Law states that the the Optical Density of a substance in solution is directly proportional to its concentration. Not all substances follow Beer's Law, but a calibration graph of Optical Density versus concentration can still be used to measure concentrations of unknown solutions.
Chemistry
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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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Course Contents » ... » Data, Statistics, and Graphing » Graphing Absorbance (Optical Density) versus Molar Concentration
The following table contains some data showing the effect of molar concentration of a solution on the absorbance (optical density) reading from a spectrophotometer.
No
↑ Does the solution in your graph follow Beer's Law?
Concentration (M)
Submit Answer Incorrect. Tries 37/99 Previous Tries
0.13
0.28
0.43
0.58
0.73
0.88
1.03
1.18
1.33
1.48
What is the concentration of a solution that has an Optical Density of 0.21? (Give units in your answer).
0.21M
You are correct.
Your receipt no. is 155-7520 ?
What is the concentration of a solution that has an Optical Density of 0.91? (Give units in your answer).
0.81 M
Previous Tries
Optical Density
To assist in graphing, right click on this excel spreadsheet file, save it to your computer, and open it in Excel. Enter the above data in the appropriate spaces in the spreadsheet. Select the graph that is created, and
print it in portrait orientation.
Notes
0.18
0.38
0.56
0.71
0.85
0.96
1.06
1.13
1.19
1.23
Use this graph as a model for drawing your own graph. If the line does not cover the entire vertical range of the Y axis, you should change your Y axis values so the graph covers most of the page and values can be
read from the graph with greater precision.
Use your graph to answer the following questions.
The Absorbance, or Optical Density, of a solution for a particular wavelength of light is given by log(10/I), where I is the incident light on a sample and I is the transmitted light. Beer's Law states that the the
Optical Density of a substance in solution is directly proportional to its concentration. Not all substances follow Beer's Law, but a calibration graph of Optical Density versus concentration can still be used to measure
concentrations of unknown solutions.
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