The quantity of antimony in an ore can be determined by an oxidation-reduction t

Question

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 the antimony is in the form 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. BrO_3_ + Sb^3+ rightarrow Br^- +Sb^5+ Tip: If you need to clear your work and reset the equation, click the button that looks like two red arrows.

Explanation / Answer

The Sb will oxedise from Sb3+ to Sb5+. Hence the balanced equation can be written as

BrO3- (aq) + 3Sb3+(aq)   + 6H (aq) ------>   Br-(aq) + 3Sb5+(aq) + 3H2O(l)

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