The arsenic in a 1 203 g sample of a pesticide was converted to H 3 AsO 4 by suitable treatment The acid was then neutralized, and 40 00 mL of 0 05871 M AgNO 3 was added to precipitate the arsenic quantitatively as Ag 3 AsO 4 The excess Ag in the filtrate and in the washings from the precipitate wa...

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The arsenic in a 1.203-g sample of a pesticide was converted to H 3 AsO 4 by

Question:

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 AgNO₃ was added to precipitate the arsenic 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