The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 7.91 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3+(aq). The Sb3+(aq) is completely oxidized by 33.3 mL of a 0.135 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is BrO3(aq) + Sb3+(aq) → Br (aq) + Sb5+(aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore. mass of antimony: percentage of antimony: g %

The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 7.91 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the antimony is in the form Sb3+(aq). The Sb3+(aq) is completely oxidized by 33.3 mL of a 0.135 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is BrO3(aq) + Sb3+(aq) → Br (aq) + Sb5+(aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore. mass of antimony: percentage of antimony: g %

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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