Chemistry, 16.04.2020 02:53 mika08

The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 6.33-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 29.9 mL of a 0.120 M aqueous solution of KBrO3(aq).

The unbalanced equation for the reaction is BrO3- (aq) + Sb^3+ (aq) > Br^3- (aq) + Sb^5+ (aq)

A) Calculate the amount of antimony in the sample (grams)

B) Calculate the percentage in the ore (%)

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The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an o...