Briggs-Rauscher Oscillating Reaction
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they didn't add the starch I think
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There's only clear and yellow...
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its so coooooooooooooooooooooooollll :0
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To dds2008: I don't remmember exactly, but you can find it at Web of Science.
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you have to add a little bit more boiled starch solution (or just powdery starch) so that it gets deep blue too ... we had the same problem in our chemistry work experience :)
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this was taken from a website and changed aournd by my own words sorry if it makes no sense lol :) v v v v v v
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IO3- + 2H2O2 + CH2(COOH)2 + H+ → ICH(COOH)2 + 2O2 + 3H2O
the slowly increasing amber color is due to the production of free iodine by a radical process. When the radical process stops, the resulting increase in iodide ion enables the sudden blue starch color. But since the non-radical process is acting, this slowly fades back to clear. The eventual resumption of the radical process is invisible, but can be revealed by the use of a suitable electrode.
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not quite. my 80 cm3 mix had 30 oscillations in 120 secs, only the first 10 of which showed no deep blue. thats at room temperature
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You could have put too much sulfuric acid, which would have 'killed' the reaction, if you think it took too long. But it normally takes around 2-2.5 minutes to start up.
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where is the blue?
killermiller6666 4 years ago 15
congratulations. a neutralization reaction. wat does that have to do with this...
chester73 4 years ago 12