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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 & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability
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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
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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