What Is the Molarity of a Potassium Triiodide Solution,KI₃(aq),if 30

question 3

Multiple Choice

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,Na₂S₂O₃(aq) ? The chemical equation for the reaction is:
2 S₂O₃^2-(aq) + I₃^-(aq) → S₄O₆^2-(aq) + 3 I^-(aq)

• A)0)0833 M
• B)0)120 M
• C)0)167 M
• D)0)333 M

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Definitions:

Two-Tailed

Pertaining to tests of statistical significance that consider both directions of deviation from a null hypothesis.

Null Hypothesis

A statistical hypothesis that proposes there is no significant difference or effect and that any observed variation is due to chance.

Critical Value

A threshold value in hypothesis testing that separates the region where the null hypothesis is rejected from the region where it is not.

Effect Size

A quantitative measure of the magnitude of the difference between groups or the strength of a relationship.