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
Chapter21: Potentiometry
Section: Chapter Questions
Problem 21.25QAP
Related questions
Question
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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb2b7a85-5101-44e3-90ec-7f7f82b3ccdc%2F1bf98c79-066a-40ca-b55a-ca173ddfeb8e%2Fp0kb4bc_processed.png&w=3840&q=75)
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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb2b7a85-5101-44e3-90ec-7f7f82b3ccdc%2F1bf98c79-066a-40ca-b55a-ca173ddfeb8e%2Fvnm2kpn_processed.png&w=3840&q=75)
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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