The iodine clock reaction is a classical chemical clock demonstration experiment to display chemical kinetics in action; it was discovered by Hans Heinrich Landolt in 1886 [📹 Mr A Shepherd]

Chemiluminescence..

That's correct! The iodine clock reaction is a popular experiment in chemistry education to demonstrate the concept of reaction rates and chemical kinetics. It involves the reaction between two colorless solutions, one containing potassium iodate (KIO3) and the other containing sodium bisulfite (NaHSO3) and starch. Initially, the reaction is slow and no visible change occurs. However, after a certain period of time, the solution suddenly turns blue-black due to the formation of iodine. The time it takes for this color change to occur can be altered by changing the concentrations of the reactants, temperature, or adding catalysts. This experiment is often used to study the effect of these factors on the rate of a chemical reaction.

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Smart Scientists

The iodine clock reaction is a classic chemical experiment known for its dramatic visual demonstration of how chemical kinetics work. It involves a series of reactions where colorless solutions suddenly turn dark blue or black at a specific moment. This sudden change happens due to the formation of a starch-iodine complex, which is dark in color.

Interesting. Now, can a chemist explain to an artist in a plain language.

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Why doesn’t it go the opposite way