A 7.13 g sample of an ant-control preparation was decomposed by wet-ashing with H₂SO and HNO₂. The As in the residue was reduced to the trivalent state with hydrazine. After removal of the excess reducing agent, the As(III) required 31.46 mL titration with 0.03142 M 1₂ in a faintly alkaline medium. What is the % As in the original sample? Select one: 1.20% 2.08% 1.04% 0.519%

A 7.13 g sample of an ant-control preparation was decomposed by wet-ashing with H₂SO and HNO₂. The As in the residue was reduced to the trivalent state with hydrazine. After removal of the excess reducing agent, the As(III) required 31.46 mL titration with 0.03142 M 1₂ in a faintly alkaline medium. What is the % As in the original sample? Select one: 1.20% 2.08% 1.04% 0.519%

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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