A clock reaction is commonly used to demonstrate principles of chemical kinetics. In a clock reaction, an initially colorless solution changes color at a precise time during the course of the reaction. One such clock reaction is based on a reaction between S2O82– and I–. The rate law was determined to be rate = k [ S2O82–] [I–]. The following mechanism has been proposed for the reaction. Predict whether the steps are fast or slow based on the overall rate law.S2O82–+ I– yield IS2O83– fast or slowIS2O83– yield 2 SO42– + I+ fast or slowI++ I– yield I2 fast or slowI2+ I– yield I3– fast or slow

For a multiple step reaction the rate law is determined by rate determining step and slowest step is…

Answered: A clock reaction is commonly used to…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter11: Chemical Kinetics: Rates Of Reactions

Section: Chapter Questions

Problem 84QRT: Many biochemical reactions are catalyzed by acids. A typical mechanism consistent with the...

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A clock reaction is commonly used to demonstrate principles of chemical kinetics. In a clock reaction, an initially colorless solution changes color at a precise time during the course of the reaction. One such clock reaction is based on a reaction between S₂O8^2– and I^–. The rate law was determined to be rate = k [ S₂O₈^2–] [I^–]. The following mechanism has been proposed for the reaction. Predict whether the steps are fast or slow based on the overall rate law.

S₂O₈^2–+ I^–yield IS₂O₈^3–fast or slow

IS₂O₈^3– yield 2 SO₄^2– + I⁺fast or slow

I⁺+ I^– yield I₂fast or slow

I₂+ I^– yield I₃^– fast or slow

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