The quantity of antimony in an ore can be determined by an oxidation‑reduction titration with an oxidizing agent. The ore is dissolved in hot, concentrated acid and passed over a reducing agent so that all of the antimony is in the form of Sb 3 + ( aq ) . The Sb 3 + ( aq ) is completely oxidized by an aqueous solution of BrO − 3 ( aq ) . Complete and balance the equation for this reaction in acidic solution.