Oscillating Colour Change

The video explains reversible chemical reactions using an oscillating clock reaction experiment. It involves three chemical solutions and a magnetic stirrer to demonstrate color changes in a beaker. The experiment showcases a sequence of reactions that produce iodide ions, iodine molecules, and color changes from amber to dark blue to colorless. The reaction continues until the reactants are consumed, leaving a dark blue liquid. This is known as the Briggs Rauscher oscillating reaction.

What is the main focus of the experiment discussed in the video?

• To demonstrate a simple chemical reaction

• To show a reaction that can oscillate

• To create a new chemical compound

• To measure the speed of a reaction

Which equipment is necessary for the oscillating reaction experiment?

• A thermometer and a beaker

• A pipette and a test tube

• A magnetic bar and stirrer

• A Bunsen burner and a flask

What color changes are observed during the oscillating reaction?

• Orange to black to clear

• Purple to pink to white

• Amber to dark blue to colorless

• Red to green to yellow

What are the components of Solution 1?

• Dilute hydrogen peroxide solution

• Starch, manganese sulfate, and malonic acid

• Sodium chloride and water

• Potassium iodate, sulfuric acid, and water

What happens to iodide ions during the reaction cycle?

• They decompose into oxygen and iodine

• They react with water to form hydrogen gas

• They gain electrons and become iodine molecules

• They lose electrons and become iodine molecules

What is the final color of the solution after the reaction completes?

• Dark blue

• Colorless

• Green

• Amber

What is the scientific name of the oscillating reaction demonstrated?

• Briggs-Rauscher oscillating reaction

• Fischer esterification

• Lindlar reaction

• Haber process