The arsenic in a 1.273-g sample of a pesticide was converted to H3 AsO4 by suitable treatment. The acid was then neutralized, and 42.00 mL of 0.05871 M AgNO3 was added to precipitate the arsenic quantitatively as Ag, AsO4. The excess Ag* in the filtrate and in the washings from the precipitate was titrated with 9.58 mL of 0.1000 M KSCN, and the reaction was Ag+ + SCN → AgSCN(s) Find the percentage of As2 O3 in the sample. Percentage of As2 O3
The arsenic in a 1.273-g sample of a pesticide was converted to H3 AsO4 by suitable treatment. The acid was then neutralized, and 42.00 mL of 0.05871 M AgNO3 was added to precipitate the arsenic quantitatively as Ag, AsO4. The excess Ag* in the filtrate and in the washings from the precipitate was titrated with 9.58 mL of 0.1000 M KSCN, and the reaction was Ag+ + SCN → AgSCN(s) Find the percentage of As2 O3 in the sample. Percentage of As2 O3
Chapter5: Chemical Reactions
Section: Chapter Questions
Problem 5.88E
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This was what was done before with the values in order of the prompt: 1.208 g, 44.00 mL, 0.05854 M, 9.69 mL, 0.1000 M KSCN. It was wrong, but this is a different set.
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