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Sunday 17th June 2018 Artist Slow Motion Iodine Clock reaction 27,041 views 190 votes For 4 vote Against
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The colour change of the iodine clock reaction normally happens very fast. But you can slow down the reaction rate by lowering the concentration of the reactants. So we diluted the reaction to the point we could see the colour change occur slowly
The iodine clock reaction is the mixture of two colourless solutions, in this case they are potassium iodate and either sulphuric acid or sodium metabisulfite, at first there is no visible reaction, but after a short delay the solution turns a dark
Slow motion lasts from 00:24 to 1:07. Here's what I've used to make the two solutions: SOL A, in 1 liter of distilled water: - Anhydrous sodium ethanoate, 4.1g; - Soluble starch, 0.2g; - Potassium iodide, 50g; - Sodium thiosulfate-5-water, 9.4g. SOL
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