The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 5.99 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 25.2 mL of a 0.135 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: g percentage of antimony: %

Chemistry: The Molecular Science
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Chapter17: Electrochemistry And Its Applications
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Problem 33QRT: Consider these half-reactions: (a) Which is the weakest oxidizing agent? (b) Which is the strongest...
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The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 5.99 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 25.2 mL of a 0.135 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:
%
Transcribed Image Text:The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 5.99 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 25.2 mL of a 0.135 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: %
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