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

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The quantity of antimony in 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 {eq}Sb_3(aq) {/eq}. The {eq}Sb_3(aq) {/eq} is completely oxidized by an aqueous solution of {eq}BrO_3(aq) {/eq}. Complete and balance the equation for this reaction in acidic solution.

{eq}BrO_3^- + 3Sb_3 \rightarrow Br^- + 3Sb^{5+} {/eq}

Balancing Redox Reactions

Balancing redox reactions is not always as simple as balancing other types of reactions. This is because there is a transfer of electrons that takes place and these reaction can be quite complex. One method of balancing the reaction equation involves separating the reaction into two parts. These parts contain the reduction reaction and the oxidation reaction. These half reactions can be balanced individually and then added together to form the overall reaction equation.

Answer and Explanation: 1

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The first step is to write out the oxidation and reduction half reactions.

The oxidation half reaction is

{eq}3Sb_3 \rightarrow 9Sb^{5+} {/eq}

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Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents

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Chapter 10 / Lesson 13
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Learn about oxidizing and reducing agents, how to find them, and how to identify them in redox reactions. Learn about the different types of redox reactions and how to identify a redox reaction.


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