Demonstrating Chemistry - Spectacular Experiments: The Pulsing Reaction

The video demonstrates the Briggs-Rauscher reaction, a fascinating example of autocatalysis. It begins with a mixture of potassium iodate, sulfuric acid, malonic acid, and manganese sulfate, leading to a series of color changes from clear to yellow to black. The reaction is characterized by its oscillating nature, where the solution repeatedly changes colors. This pulsing reaction continues until one of the reagents is depleted. The video highlights the reaction's magical appearance and explains the underlying chemical processes, emphasizing the importance of mixing and the role of autocatalysis.

What is the initial color change observed in the Briggs Rauscher reaction?

What is meant by autocatalysis in the context of the Briggs Rauscher reaction?

Explain why the reaction eventually stops.

How many times did the reaction oscillate according to the text?

Describe the process that leads to the oscillation in the Briggs Rauscher reaction.