19-04-2024
Chemistry

Answered

The quantity of antimony in the sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 5.83 g sample of stibnite, on 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 of Sb3+(aq). The Sb3+ (aq) is completely oxidized by 27.6 mL of a .120 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is BrO3-(aq) + Sb3+(aq) --> Br-(aq)+Sb5+(aq). Calculated the amount of antimony in the sample and its percentage in the ore

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