A 5.27-g sample of an ant-control preparation was decomposed by wet ashing with H₂SO4 and HNO3. The arsenic in une residue was reduced to the trivalent state with hydrazine. After the excess reducing agent had been removed, the arsenic(III) was oxidized with electrolytically generated 12 in a faintly alkaline medium: HASO + 1₂ + 2HCO HASO + 2 + 2CO + H₂O The titration was complete after a constant current of 105.2 mA had been passed for 10 min and 43 s. Express the results of this analysis in terms of the percentage As2O3 in the original sample.

A 5.27-g sample of an ant-control preparation was decomposed by wet ashing with H₂SO4 and HNO3. The arsenic in une residue was reduced to the trivalent state with hydrazine. After the excess reducing agent had been removed, the arsenic(III) was oxidized with electrolytically generated 12 in a faintly alkaline medium: HASO + 1₂ + 2HCO HASO + 2 + 2CO + H₂O The titration was complete after a constant current of 105.2 mA had been passed for 10 min and 43 s. Express the results of this analysis in terms of the percentage As2O3 in the original sample.

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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