The quantity of antimony in a sample can be determined by an

Last updated: 7/28/2022

The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 8.93 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 44.1 mL of a 0.115 M aqueous solution of KBrO3(aq). The unbalanced equation for the reaction is 3+ BrO3(aq) + Sb³+ (aq) - → Br (aq) + Sb5+ (aq) (unbalanced) Calculate the amount of antimony in the sample and its percentage in the ore. mass of antimony: percentage of antimony: % g