Alexia Rayeのインスタグラム(alexiaraye) - 2月4日 08時03分

**NEXT WEEK WILL BE ON IGTV** This was REALLY hard to condense to one minute so I’ve decided to post LONGER vids on IGTV & the shortened reaction on my IG page.🎉 • • •
The Iodine Clock Reaction uses two colorless solutions to demonstrate chemical kinetics. Kinetics is the branch of chemistry that studies rates of reactions. There are two reactions cycling after the solutions are combined. The first reaction you saw when the (black) colored I2 (iodine) was added to Vitamin C to produce colorless I- (iodide), but when you add Solution B the hydrogen peroxide wants to oxidize the iodide back to iodine and this cycle repeats until the ascorbic acid from the Vitamin C is depleted from the excess of hydrogen peroxide. When this happens the I2 is then reacting with I- to form I3 (triiodide). The triiodide mixes with the starch to then form the blue starch/triiodide mixture. There are a couple variables that can speed up the process, which include, higher hydrogen peroxide concentrations and heat.

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