Investigate the Kinetics of the Color Changing Iodine Clock Reaction

The iodine clock reaction is a favorite demonstration reaction in chemistry classes that usually requires toxic or hazardous chemicals. During the reaction, two clear liquids are mixed, resulting in another clear liquid. After some time, the solution suddenly turns dark blue. The reaction is called a clock reaction because the amount of time that elapses before the solution turns blue depends on the concentrations of the starting chemicals. In this green chemistry project, you will use a modified iodine clock reaction that uses safe household chemicals to explore factors that affect the rate of the iodine clock reaction.

This project idea was developed and written by David B. Whyte, PhD, and Svenja Lohner, PhD, scientists with Science Buddies.

Science Buddies Staff. "Investigate the Kinetics of the Color Changing Iodine Clock Reaction." Science Buddies, 22 Nov. 2022, https://www.sciencebuddies.org/science-fair-projects/project-ideas/Chem_p091/chemistry/iodine-clock-reaction-kinetics.