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Show your calculations for the volume of 0.100 M LiCI required for each dilution in Step 2. (HINT: dilution law: M¡V¡ = M2V2) %3D

Show your calculations for the volume of 0.100 M LiCI required for each dilution in Step 2. (HINT: dilution law: M¡V¡ = M2V2) %3D

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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Solutions Procedure: 1. Prepare 50 mL of a 0.100 M solution of LiCl. 2. Using this stock solution, prepare a series of solutions (20 mL each) with the following concentrations: 0.0500 M, 0.0250 M, 0.0125 M, and0.00625 M. The dilutions should leave ~30 mL of the 0.100 M stock solution to finish the series. (Note that each solution in the series is ½ the concentration of the previous solution.) 3. Using the information in the tables below, plot conductivity (mS cm') vs. concentration (mol/L) using Excel (or other plotting software) and apply a linear regression analysis to the plot. 4. Repeat steps 1-3 for formic acid. LICI Formic Acid ms cm 10.66 mol/L 0.10000 ms cm 1.79 1.60 mol/L 0.10000 7.75 0.05000 0.05000 6.30 0.02500 1.50 0.02500 5.57 0.01250 1.45 0.01250 5.21 0.00625 1.43 0.00625 Questions: 1. Determine the mass of LİCI (42.394 g/mol) required for Step l. 2. Show your calculations for the volume of 0.100 M LİCI required for each dilution in Step 2. (HINT: dilution law: M¡Vi = M¿V2) 3. Submit your two clearly labeled plots (including their linear fits) from Excel (or other plotting software). There is a short video on D2L on how to plot using Excel. 4. Which compound is the stronger electrolyte? What do you believe to be the major factor accounting for the difference?
Transcribed Image Text:Solutions Procedure: 1. Prepare 50 mL of a 0.100 M solution of LiCl. 2. Using this stock solution, prepare a series of solutions (20 mL each) with the following concentrations: 0.0500 M, 0.0250 M, 0.0125 M, and0.00625 M. The dilutions should leave ~30 mL of the 0.100 M stock solution to finish the series. (Note that each solution in the series is ½ the concentration of the previous solution.) 3. Using the information in the tables below, plot conductivity (mS cm') vs. concentration (mol/L) using Excel (or other plotting software) and apply a linear regression analysis to the plot. 4. Repeat steps 1-3 for formic acid. LICI Formic Acid ms cm 10.66 mol/L 0.10000 ms cm 1.79 1.60 mol/L 0.10000 7.75 0.05000 0.05000 6.30 0.02500 1.50 0.02500 5.57 0.01250 1.45 0.01250 5.21 0.00625 1.43 0.00625 Questions: 1. Determine the mass of LİCI (42.394 g/mol) required for Step l. 2. Show your calculations for the volume of 0.100 M LİCI required for each dilution in Step 2. (HINT: dilution law: M¡Vi = M¿V2) 3. Submit your two clearly labeled plots (including their linear fits) from Excel (or other plotting software). There is a short video on D2L on how to plot using Excel. 4. Which compound is the stronger electrolyte? What do you believe to be the major factor accounting for the difference?
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