A 0.3500-g sample of impure Kl is treated with 0.1942 g of pure K2CrO4 and the solution is boiled to expel all of the liberated iodine. The cooled solution is then treated with excess KI and the liberated l2 titrated with 0.100 N sodium thiosulfate, requiring10.00 mL. Find the percentage purity of the original sample of Kl.

A 0.3500-g sample of impure Kl is treated with 0.1942 g of pure K2CrO4 and the solution is boiled to expel all of the liberated iodine. The cooled solution is then treated with excess KI and the liberated l2 titrated with 0.100 N sodium thiosulfate, requiring10.00 mL. Find the percentage purity of the original sample of Kl.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter13: Titrations In Analytical Chemistry

Section: Chapter Questions

Problem 13.23QAP

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