arsenic in a 1.010 g sample of pesticide was converted to H3ASO4 by appropriate means. The acid neutralized and the arsenate precipitated quantitatively as Ag3As04 with exactly 40.00 mL of 22 M AgNO3. 3Ag* + AsO4→ Ag3AsO4 xcess Ag* was titrated with SCN , requiring 10.76 mL of 0.1000 M KSCN; the reaction being: Ag* + SCN → A SCN(s). late the percentage of As2O3 (MM = 197.841 g/mol) in the original sample.

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The arsenic in a 1.010 g sample of pesticide was converted to H3ASO4 by appropriate means. The acid
was neutralized and the arsenate precipitated quantitatively as Ag3AsO4 with exactly 40.00 mL of
0.06222 M AgNO3.
3Ag* + AsO4 → Ag3AsO4
The excess Ag" was titrated with SCN , requiring 10.76 mL of 0.1000 M KSCN; the reaction being:
Ag* + SCN→ A SCN(s).
Calculate the percentage of As2O3 (MM = 197.841 g/mol) in the original sample.
Transcribed Image Text:The arsenic in a 1.010 g sample of pesticide was converted to H3ASO4 by appropriate means. The acid was neutralized and the arsenate precipitated quantitatively as Ag3AsO4 with exactly 40.00 mL of 0.06222 M AgNO3. 3Ag* + AsO4 → Ag3AsO4 The excess Ag" was titrated with SCN , requiring 10.76 mL of 0.1000 M KSCN; the reaction being: Ag* + SCN→ A SCN(s). Calculate the percentage of As2O3 (MM = 197.841 g/mol) in the original sample.
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