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Question
What is the molarity of a potassium triiodide solution, KI3(aq), if 30.00 mL of the solution is required to completely react with 25.00 mL of a 0. 200 M thiosulfate solution, K2S2O3(aq)? The chemical equation for the reaction is:
2 S2O32-(aq) + I3-(aq) -> S4O62-(aq) + 3 I-(aq).
A) 0. 0833 M
B) 0. 120 M
C) 0. 167 M
D) 0.333 M
Answer
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