E2 Reaction Mechanism Hoffman Elimination vs Zaitsevs Rule

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=SCoLMfplVWs

The Briggs-Rauscher oscillating reaction is one of the very few oscillating reactions that we know of. • Throughout the reaction, the concentration of iodide (I-) goes up and down, and this causes a swap between 2 processes. The the concentration is high, the process that consumes iodide is favored. When it is low, the process that produces it is favored. This causes a constant fluctuation of iodide. • As the iodide increases, it forms I2 which is yellow, then the I2 eventually combines with I- to form I3. This complexes with starch and forms a blue-black complex. The iodide producing process is then shutdown and the process that consumes it takes over. The iodide concentration drops, the I3-starch complex falls apart and the color dissipates. The I2 is sequestered by malonic acid and the solution reverts to colorless. • The [i-] continues to fall until the other process then takes over. Iodide is produced again and the cycle repeats itself. • NOTE: The yellow color of solution A was solved almost instantly by Bill Smathers. The iodate was likely contaminated with iodide. In acid, the lead to the production of I2, which gave the solution a yellow color. Upon addition of B, the I2 was sequestered by malonic acid! • Belousov video: • Recreating one of the weirdest reactions • ------------------------------------------------------------------------------- • Merch - https://nilered.tv/store • ------------------------------------------------------------------------------- • ■ NileRed is now available on Nebula! https://go.nebula.tv/nilered • (when signing up with this link, a portion of your membership directly supports the channel) • Join the community: • Patreon - / nilered • Discord - / discord • NileRed Newsletter - https://nile.red/home#newsletter • You can also find me here: • Facebook - / nilered2 • Instagram - / nile.red • Twitter - / nilered2 • Nile talks about lab safety: • Chemistry is dangerous.

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