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The arsenic in a 1.203-g sample was converted to H,AsO4 by suitable treatment. The acid was then neutralized, and 40.00 mL of 0.05871 M AgNO, was added to precipitate the ar- senic quantitatively as Ag3AsO4. The excess Ag* in the filtrate and in the washings from the precipitate was titrated with 9.63 mL of 0.1000 M KSCN, and the reaction was Ag* + SCN AgSCN(s)

The arsenic in a 1.203-g sample was converted to H,AsO4 by suitable treatment. The acid was then neutralized, and 40.00 mL of 0.05871 M AgNO, was added to precipitate the ar- senic quantitatively as Ag3AsO4. The excess Ag* in the filtrate and in the washings from the precipitate was titrated with 9.63 mL of 0.1000 M KSCN, and the reaction was Ag* + SCN AgSCN(s)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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2. The arsenic in a 1.203-g sample of a pesticide was converted to H3ASO4 by suitable treatment. The acid was then neutralized, and 40.00 mL of 0.05871 M AgNO, was added to precipitate the ar- senic quantitatively as Ag,AsO4. The excess Ag* in the filtrate and in the washings from the precipitate was titrated with 9.63 mL of 0.1000 M KSCN, and the reaction was Ag* + SCN - AgSCN(s) Find the percentage of As,O, in the sample.
Transcribed Image Text:2. The arsenic in a 1.203-g sample of a pesticide was converted to H3ASO4 by suitable treatment. The acid was then neutralized, and 40.00 mL of 0.05871 M AgNO, was added to precipitate the ar- senic quantitatively as Ag,AsO4. The excess Ag* in the filtrate and in the washings from the precipitate was titrated with 9.63 mL of 0.1000 M KSCN, and the reaction was Ag* + SCN - AgSCN(s) Find the percentage of As,O, in the sample.
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