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What is Rainbow Reaction: Acid-Base Diffusion about?

The Rainbow Reaction experiment demonstrates the diffusion of liquids and acid-base indicators. By slowly pouring a saturated sodium carbonate solution down the inside of a graduated cylinder filled with hydrochloric acid and universal indicator, a colorful gradient develops from red at the top to blue at the bottom. This rainbow effect shows the universal indicator changing color in response to the different acidity levels as the denser sodium carbonate solution sinks and slowly mixes with the hydrochloric

Author

Winnie Ho

Language

EN