The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 5.95 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 25.0 mL of a 0.135 M aqueous solution of KBr0,(aq). The unbalanced equation for the reaction is BrOz (aq) + Sb³+(aq) – Br (aq) + Sb³+(aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore.
The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 5.95 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 25.0 mL of a 0.135 M aqueous solution of KBr0,(aq). The unbalanced equation for the reaction is BrOz (aq) + Sb³+(aq) – Br (aq) + Sb³+(aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore.
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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Transcribed Image Text:The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A
5.95 g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent
3+
so that all the antimony is in the form Sb³*(aq). The Sb³*(aq) is completely oxidized by 25.0 mL of a 0.135 M aqueous
solution of KBrO,(aq). The unbalanced equation for the reaction is
BrO (aq) + Sb3+
(aq)
Br (aq) + Sb+(aq) (unbalanced)
Calculate the amount of antimony in the sample and its percentage in the ore.
mass of antimony:
g
percentage of antimony:
%
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