Initial rates and the iodine clock

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Tick tock goes the Iodine clock! Well not quite. Explore this video to find out how we can measure the initial rate from reactions and how we can use clock reactions to do the same too. Find out how we can use this to find out the order of the reaction.

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My word, these videos are absolute pieces of gem. I sincerely hope you are getting donations, because it'd be a shame if you had to delete this channel. All the best.

MrHarun-dvee

ik this is quite an old vidoe but please never stop doing these, because 9 years later this helped me understand so much more than save my exams and pmt :)

adlieneedun

You need to explain that the thiosilphate is added to consume the iodine in the first reaction and when all the thiosulphate is used the iodine remains which then starch to a black colour. In your example the reaction will instantly go black.

imranramzan

Mr allery u are an absolute blessing in my life

darkmoon

Thank you, thank you, thank you very much, you have saved me

zakkharsane

you are a complete legend, thanks so much

joehindley

This actually helped me to understand the graphical method a lot better, my text book isn't very concise. However, I'm still a bit hazy on the iodine clock reaction, do you put the starch in at the same time as when you are mixing the reactants? My textbook says that the initial rate is proportional to 1/t. I'm not quite sure I understand.

SH-tkhy

Surely thiosulphate must be added to the clock reaction? It’s a two step reaction and the second step involves thiosulphate

SuperStargazer

Is the iodine clock experiment considered as initial rates method.

rbc

Hiya! Thanks for this fab video!
Can you draw a tangent to the graph at t=0 and then measure the gradient of the tangent? That method has come up in Edexcel papers before.

MeeraP

I want to do a kinetic for a chemical reaction. Could you please how to calculate the intial rate of reaction?.

spadventuresworld

Hey so I was just wondering, is it possible to measure the rate of reaction of an oscillatory reaction??? Like the briggs rauscher reaction??

samcat

In our book they added sodium thiosulfate can i know why was it added ??

hudadahman

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