The quantity of antimony in a sample can be determined by an oxidation–reduction titration with an oxidizing agent. a 6.47 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 sb 3 ( aq ) . the sb 3 ( aq ) is completely oxidized by 33.4 ml of a 0.110 m aqueous solution of kbro 3 ( aq ) . the unbalanced equation for the reaction is bro − 3 ( aq ) sb 3 ( aq ) ⟶ br − ( aq ) sb 5 ( aq ) (unbalanced) calculate the amount of antimony in the sample and its percentage in the ore.