A0.600 g sample containing arsenic (As) was converted to H,AsO, by suitable treatment. 40.00 mL of 0.07891 M AGNO, was then added to the acid to precipitate arsenic quantitatively as Ag3AsO,. The excess AgNO, was back-titrated with I1.27 mL.of 0.1000 M KSCN; the Reaction was Calculate the percent of As,Og in the sample. 1. O5.47 2. 02.23 3. 11.15 4. O 66.92 5. O33.45 Previous Next

A0.600 g sample containing arsenic (As) was converted to H,AsO, by suitable treatment. 40.00 mL of 0.07891 M AGNO, was then added to the acid to precipitate arsenic quantitatively as Ag3AsO,. The excess AgNO, was back-titrated with I1.27 mL.of 0.1000 M KSCN; the Reaction was Calculate the percent of As,Og in the sample. 1. O5.47 2. 02.23 3. 11.15 4. O 66.92 5. O33.45 Previous Next

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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