A 0.574-g sample of a chlorocarbon compound was analyzed by burning it in oxygen and collecting the evolved gases in a solution of NaOH. After neutralizing, the sample was treated with 26.21 mL of a 0.28 M AgNO3 solution. This precipitated the chloride (Cl-) out as AgCl and left an excess of AgNO3. The excess AgNO3 was titrated with 0.122 M KSCN and required 24.91 mL to reach the endpoint in a Volhard titration.Calculate the % w/w Cl– (35.45 g/mol) in the sample. Provide your answer to 2 places after the decimal point and without units.Reactions: Cl– + Ag+ → AgCl(s) Reaction 1Ag+ + SCN– → AgSCN(s) Reaction 2

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Answered: Calculate the % w/w Cl– (35.45 g/mol)…

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter15: Equilibria Of Other Reaction Classes

Section: Chapter Questions

Problem 10E: The Handbook of Chemistry and Physics (http://openstaxcollege.org/l/16Handbook) gives solubilities...

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A 0.574-g sample of a chlorocarbon compound was analyzed by burning it in oxygen and collecting the evolved gases in a solution of NaOH. After neutralizing, the sample was treated with 26.21 mL of a 0.28 M AgNO₃ solution. This precipitated the chloride (Cl^-) out as AgCl and left an excess of AgNO₃. The excess AgNO₃ was titrated with 0.122 M KSCN and required 24.91 mL to reach the endpoint in a Volhard titration.

Calculate the % w/w Cl^– (35.45 g/mol) in the sample. Provide your answer to 2 places after the decimal point and without units.

Reactions: Cl^– + Ag⁺ → AgCl(s) Reaction 1

Ag⁺ + SCN^– → AgSCN(s) Reaction 2

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