The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 5.45 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCI(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 23.8 mL of a 0.130 M aqueous solution of KBRO, (aq). The unbalanced equation for the reaction is BrO (aq) + Sb³+(aq) → Br (aq) + Sb³*(aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore. mass of antimony: percentage of antimony:

The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 5.45 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCI(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 23.8 mL of a 0.130 M aqueous solution of KBRO, (aq). The unbalanced equation for the reaction is BrO (aq) + Sb³+(aq) → Br (aq) + Sb³*(aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore. mass of antimony: percentage of antimony:

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter23: Potentiometry

Section: Chapter Questions

Problem 23.14QAP

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