Based on the balanced chemical equation shown below,what volume of 0.250 M K₂S₂O₃(aq) ,is needed to completely react with 24.88 mL of 0.125 M KI₃(aq) ?
2 S₂O₃^2-(aq) + I₃^-(aq) → S₄O₆^2-(aq) + 3 I^-(aq)

Question

Quizplus · Accepted Answer

The stoichiometry of the reaction shows that 2 moles of S2O3^2- react with 1 mole of I3^-. Calculate moles of I3^- using its concentration and volume, then use stoichiometry to find moles of S2O3^2- needed. Finally, calculate the volume of 0.250 M K2S2O3 solution required.

Based on the Balanced Chemical Equation Shown Below,what Volume of 0.250