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concentration of 2.02 x 10-5 M. The molecular weight of the allura red is 496 g/mol. You use the lab equipment available to make 5 dilutions of the stock solution. A. Determine the volume of stock solution required to make 5.00 mL of the diluted solutions the desire concentrations are

concentration of 2.02 x 10-5 M. The molecular weight of the allura red is 496 g/mol. You use the lab equipment available to make 5 dilutions of the stock solution. A. Determine the volume of stock solution required to make 5.00 mL of the diluted solutions the desire concentrations are

Chemistry
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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You are given 25 mL of a Red #40 Allure Red food stock solution of a concentration of 2.02 x 10-5 M. The molecular weight of the allura red is 496 g/mol. You use the lab equipment available to make 5 dilutions of the stock solution.

A. Determine the volume of stock solution required to make 5.00 mL of the diluted solutions the desire concentrations are 

(Picture of table included) 

 

B. The absorbance of each dilution is also given in the table prepare a beer's law plot and attach. Then determine the concentration of an unknown solution of allura red if the absorbance is found to be 0.436.

4. 5. CHEM 1232 10. You are given 25 mL of a Red #40 Allura Red food coloring stock solution of at a concentration of 2.02 x 105 M. The molecular weight of the allura red is 496 g/mol. You use the lab equipment available to make 5 dilutions of the stock solution. Spring 2021 Spectrophotometric Analysis of Co Solutions A. Determine the volume of stock solution required to make 5.00 mL of each of the diluted solutions. The desired concentrations are Volume of Molar Solution Volume of the Stock the Concentration Absorbance number Solution Diluted of the Diluted Solution Solution 5.00 mL 1.82 x 10 M 0.170 1. 5.00 mL 5.55 x 106 M 0.348 2. 5.00 mL 9.29 x 10-6 M 0.524 3. 5.00 mL 1.24 x 105 M 5.00 mL 1.64 x 10-5 M 0.843 Show your calculations here: B. The absorbance of each dilution is also given in the table. Prepare a Beer's law plot and attach it to this assignment. Please use Excel to graph the data. Then Determine the concentration of an unknown solution of allura red if the absorbance is found to be 0.436. 6.
Transcribed Image Text:4. 5. CHEM 1232 10. You are given 25 mL of a Red #40 Allura Red food coloring stock solution of at a concentration of 2.02 x 105 M. The molecular weight of the allura red is 496 g/mol. You use the lab equipment available to make 5 dilutions of the stock solution. Spring 2021 Spectrophotometric Analysis of Co Solutions A. Determine the volume of stock solution required to make 5.00 mL of each of the diluted solutions. The desired concentrations are Volume of Molar Solution Volume of the Stock the Concentration Absorbance number Solution Diluted of the Diluted Solution Solution 5.00 mL 1.82 x 10 M 0.170 1. 5.00 mL 5.55 x 106 M 0.348 2. 5.00 mL 9.29 x 10-6 M 0.524 3. 5.00 mL 1.24 x 105 M 5.00 mL 1.64 x 10-5 M 0.843 Show your calculations here: B. The absorbance of each dilution is also given in the table. Prepare a Beer's law plot and attach it to this assignment. Please use Excel to graph the data. Then Determine the concentration of an unknown solution of allura red if the absorbance is found to be 0.436. 6.
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