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Standard Sodium Chloride Weighed mass of NaCl Purity of NaCl Molar concentration of NaCl using weighed mass and purity 1 Titrations of standard NaCl (25.00 mL aliquots) with the provided AgNO3 Precise Titration # Volume of AgNO3 required (mL) 2 3 Mean volume AgNO3 21.52 Confidence limit for the titration volume 21.44 21.46 Standard deviation in the mean titration volume Relative confidence limit for the titration volume (standardization) Concentration of AgNO3 from mean titration volume = 0.6752 II = 100.03 = 21.473333 = 0.02403701 = 0.1034312 = 4.816730 g in 250.0 mL % mol L-1 mL । mL mL ppt mol L-1

Standard Sodium Chloride Weighed mass of NaCl Purity of NaCl Molar concentration of NaCl using weighed mass and purity 1 Titrations of standard NaCl (25.00 mL aliquots) with the provided AgNO3 Precise Titration # Volume of AgNO3 required (mL) 2 3 Mean volume AgNO3 21.52 Confidence limit for the titration volume 21.44 21.46 Standard deviation in the mean titration volume Relative confidence limit for the titration volume (standardization) Concentration of AgNO3 from mean titration volume = 0.6752 II = 100.03 = 21.473333 = 0.02403701 = 0.1034312 = 4.816730 g in 250.0 mL % mol L-1 mL । mL mL ppt mol L-1

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A solid sample containing chloride ion is analyzed by argentimetric titration to find the percentage chloride by mass. The procedure involves the preparation of a solution made from primary standard sodium chloride (molar mass = 58.443 g mol-1). Aliquots of NaCl solution will be titrated with silver nitrate solution to accurately determine the AgNO3 concentration. The standardized silver nitrate will be used to titrate aliquots of unknown chloride solution, thus allowing for the determination of the percentage chloride in the original solid sample. To detect the endpoint of the titration the adsorption indicator dichlorofluorescein is used.

 

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Standard Sodium Chloride Weighed mass of NaCl Purity of NaCl Molar concentration of NaCl using weighed mass and purity 1 Titrations of standard NaCl (25.00 mL aliquots) with the provided AgNO3 Precise Titration # Volume of AgNO3 required (mL) 2 3 Mean volume AgNO3 21.52 Confidence limit for the titration volume 21.44 21.46 Standard deviation in the mean titration volume Relative confidence limit for the titration volume (standardization) Concentration of AgNO3 from mean titration volume = 0.6752 II = 100.03 = 21.473333 = 0.02403701 = 0.1034312 = 4.816730 g in 250.0 mL % mol L-1 mL mL mL ppt mol L-1
Transcribed Image Text:Standard Sodium Chloride Weighed mass of NaCl Purity of NaCl Molar concentration of NaCl using weighed mass and purity 1 Titrations of standard NaCl (25.00 mL aliquots) with the provided AgNO3 Precise Titration # Volume of AgNO3 required (mL) 2 3 Mean volume AgNO3 21.52 Confidence limit for the titration volume 21.44 21.46 Standard deviation in the mean titration volume Relative confidence limit for the titration volume (standardization) Concentration of AgNO3 from mean titration volume = 0.6752 II = 100.03 = 21.473333 = 0.02403701 = 0.1034312 = 4.816730 g in 250.0 mL % mol L-1 mL mL mL ppt mol L-1
Unknown chloride Weighed mass of unknown chloride Titration of Unknown Chloride (25.00 mL aliquots) with the provided AgNO3 Precise Titration # Volume of AgNO3 required (mL) 1 2 3 Mean volume AgNO3 Confidence limit for the titration volume 23.78 Standard deviation in the mean titration volume Concentration of unknown chloride 23.84 Mass % chloride in unknown 23.77 Relative confidence limit for the titration volume (unknown analysis) = 0.7580 || || g in 250.0 mL = 23.796867 = 0.02185813 = 0.09405553 = 3.952466 mL mL mL ppt mol L-1 % CI
Transcribed Image Text:Unknown chloride Weighed mass of unknown chloride Titration of Unknown Chloride (25.00 mL aliquots) with the provided AgNO3 Precise Titration # Volume of AgNO3 required (mL) 1 2 3 Mean volume AgNO3 Confidence limit for the titration volume 23.78 Standard deviation in the mean titration volume Concentration of unknown chloride 23.84 Mass % chloride in unknown 23.77 Relative confidence limit for the titration volume (unknown analysis) = 0.7580 || || g in 250.0 mL = 23.796867 = 0.02185813 = 0.09405553 = 3.952466 mL mL mL ppt mol L-1 % CI
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