The arsenic in a 1.209-g sample of a pesticide was converted to H3 AsO4 by suitable treatment. The acid was then neutralized, and 43.00 ml of 0.05829 M AgNO3 was added to precipitate the arsenic quantitatively as Ag3 AsO4. The excess Ag in the filtrate and in the washings from the precipitate was titrated with 9.83 mL of 0.1000 M KSCN, and the reaction was Ag+ + SCN → AGSCN Find the percentage of As2 O3 in the sample. Percentage of As2 O3 = %

The arsenic in a 1.209-g sample of a pesticide was converted to H3 AsO4 by suitable treatment. The acid was then neutralized, and 43.00 ml of 0.05829 M AgNO3 was added to precipitate the arsenic quantitatively as Ag3 AsO4. The excess Ag in the filtrate and in the washings from the precipitate was titrated with 9.83 mL of 0.1000 M KSCN, and the reaction was Ag+ + SCN → AGSCN Find the percentage of As2 O3 in the sample. Percentage of As2 O3 = %

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter13: Titrations In Analytical Chemistry

Section: Chapter Questions

Problem 13.22QAP

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