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I have been investigating the iodine-clock reaction for my chemistry project. I have done a great deal of research on the titration of iodate ions, iodide ions and sodium thiosulfate using HCl. But, I still don't get the use of this reaction. Where can this type of reaction be used in our lives.

I read articles that said iodine clock reaction can be used to determine the concentrations or pH. But where can it be used? What are the real-life applications of the iodine clock reaction?

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    $\begingroup$ I doubt if there's much interest in it besides academic research and popularization of chemistry. $\endgroup$ – Mithoron Sep 17 '15 at 18:20
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    $\begingroup$ You need to separate the iodine clock reaction (one that ticks back and forth) from the underlying iodine-forming reaction that leads to the starch-iodine complex. Only the latter has proper applications. $\endgroup$ – Jan Sep 17 '15 at 18:47
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    $\begingroup$ Yes, these reaction are only of academic interest only and do not find any practical purposes. These reaction are very special due to its unique kinetic and thermodynamic properties. $\endgroup$ – Nilay Ghosh Nov 27 '16 at 5:11
  • $\begingroup$ I believe these so-called "iodine clock reactions" are frequently used to teach chemical kinetics in the school laboratory? $\endgroup$ – Tan Yong Boon Dec 10 '18 at 5:44
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This iodine clock reaction project can apply to the real world in different ways, but I think the biggest way is concentration. After doing some research, I found out that it can teach you about concentration, because it shows you that once you add any bigger amount to a substance, it changes reaction time, or in a real world case, how a substance feels, acts, looks, and possibly how it smells.

I know this is really late and you probably don't need this and you are done your project, but I'm just a bored grade 7 doing the same science project.

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