A sensitive method for 12 in the presence of Cl₂ and Br₂ entails oxidation of the 12 to 103 with Br₂. The excess Br₂ is then removed by boiling or by reduction with formate ion. The 103 produced is determined by addition of excess 1₂ and titration of the resulting 1₂. A 1.307-g sample of mixed halides was dissolved and analyzed by the foregoing procedure. A volume of 19.72 mL of 0.04926 M thiosulfate was required for the titration. Calculate the percentage of KI in the sample.

A sensitive method for 12 in the presence of Cl₂ and Br₂ entails oxidation of the 12 to 103 with Br₂. The excess Br₂ is then removed by boiling or by reduction with formate ion. The 103 produced is determined by addition of excess 1₂ and titration of the resulting 1₂. A 1.307-g sample of mixed halides was dissolved and analyzed by the foregoing procedure. A volume of 19.72 mL of 0.04926 M thiosulfate was required for the titration. Calculate the percentage of KI in the sample.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.34QAP

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