The amount of I−3(aq)I3−(aq) in a solution can be determined by titration with a solution containing a known concentration of S2O2−3(aq)S2O32−(aq) (thiosulfate ion). The determination is based on the net ionic equation   2S2O2−3(aq)+I−3(aq)⟶S4O2−6(aq)+3I−(aq)2S2O32−(aq)+I3−(aq)⟶S4O62−(aq)+3I−(aq)   Given that it requires 28.8 mL28.8 mL of 0.360 M Na2S2O3(aq)0.360 M Na2S2O3(aq) to titrate a 30.0 mL30.0 mL sample of I−3(aq),I3−(aq), calculate the molarity of I−3(aq)I3−(aq) in the solution.

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The amount of I−3(aq)I3−(aq) in a solution can be determined by titration with a solution containing a known concentration of S2O2−3(aq)S2O32−(aq) (thiosulfate ion). The determination is based on the net ionic equation

 

2S2O2−3(aq)+I−3(aq)⟶S4O2−6(aq)+3I−(aq)2S2O32−(aq)+I3−(aq)⟶S4O62−(aq)+3I−(aq)

 

Given that it requires 28.8 mL28.8 mL of 0.360 M Na2S2O3(aq)0.360 M Na2S2O3(aq) to titrate a 30.0 mL30.0 mL sample of I−3(aq),I3−(aq), calculate the molarity of I−3(aq)I3−(aq) in the solution.

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