Consider the following data set: Sample Corrected Absorbance at 470 nm 100 ug/ml CuSO. standard 200 ug/mL CuSO. standard 300 ug/ml Cuso. standard 0.032 0.058 0.090 400 ug/ml CuSO. standard 500 ug/ml Cuso. standard CusO. Solution with Unknown Concentration 0.114 0.140 0.070 1. Plot (Using MS Excel) or draw by hand a standard calibration curve for samples 1 to 5. Determine the molar absorptivity using the absorbance of the 100 ug/mL CuSo, standard. (Note: Convert ug/ml to Molarity first using the molar mass of the standard which is 249.685 g/mol). l 2. Write the resulting linear regression equation and R of the plotted standard calibration curve. 3. Calculate the concentration of the "CuSO. Solution with Unknown Concentration" using the produced linear regression equation from the standard calibration curve and its absorbance at 470 nm.

Consider the following data set: Sample Corrected Absorbance at 470 nm 100 ug/ml CuSO. standard 200 ug/mL CuSO. standard 300 ug/ml Cuso. standard 0.032 0.058 0.090 400 ug/ml CuSO. standard 500 ug/ml Cuso. standard CusO. Solution with Unknown Concentration 0.114 0.140 0.070 1. Plot (Using MS Excel) or draw by hand a standard calibration curve for samples 1 to 5. Determine the molar absorptivity using the absorbance of the 100 ug/mL CuSo, standard. (Note: Convert ug/ml to Molarity first using the molar mass of the standard which is 249.685 g/mol). l 2. Write the resulting linear regression equation and R of the plotted standard calibration curve. 3. Calculate the concentration of the "CuSO. Solution with Unknown Concentration" using the produced linear regression equation from the standard calibration curve and its absorbance at 470 nm.

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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Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

100%

Consider the following data set:
Sample
Corrected Absorbance at 470 nm
100 ug/ml CuSO. standard
0.032
200 µg/ml Cuso. standard
0.058
300 ug/ml CusO. standard
400 µg/ml CuSO. standard
0.090
0.114
500 ug/ml CusO standard
0.140
CusO. Solution with Unknown Concentration
0.070
1. Plot (Using MS Excel) or draw by hand a standard calibration curve for samples 1 to 5. Determine the
molar absorptivity using the absorbance of the 100 ug/ml Cuso, standard. (Note: Convert ug/ml to
Molarity first using the molar mass of the standard which is 249.685 g/mol).
2. Write the resulting linear regression equation and R of the plotted standard calibration curve.
3. Calculate the concentration of the "CuSO. Solution with Unknown Concentration" using the produced
linear regression equation from the standard calibration curve and its absorbance at 470 nm.

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