The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 9.53-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 Sb (aq). The Sb (aq) is completely oxidized by 43.3 mL of a 0.125 M aqueous solution of KBro, (aq). The unbalanced equation for the reaction is H* (aq) + BrO, (aq) + Sb** (aq) Br (aq) + Sb* (aq) + H,O(1) (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 9.53-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 Sb (aq). The Sb (aq) is completely oxidized by 43.3 mL of a 0.125 M aqueous solution of KBro, (aq). The unbalanced equation for the reaction is H* (aq) + BrO, (aq) + Sb** (aq) Br (aq) + Sb* (aq) + H,O(1) (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
9.53-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 Sb (aq). The Sb*(aq) is completely oxidized by 43.3 mL of a 0.125 M aqueous
solution of KBrO, (aq). The unbalanced equation for the reaction is
H(aq) + BrO, (aq) + Sb** (aq) Br (aq) + Sb*
(aq) + H,O(1)
(unbalanced)
Calculate the amount of antimony in the sample and its percentage in the ore.
amount of antimony: 1.66
Incorrect
percentage in the ore:
20.7
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