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September 2, 2015

Homework Help: Chemistry Lab

Posted by Anonymous on Sunday, February 2, 2014 at 9:25pm.

So I did a kinetics lab on the rate of reaction of peroxydisulfate ion with iodide ion. Part 1 was the effect of concentration. One of the questions asked is to calculate the amount of thiosulfate consumed in moles.

My results for trial 1 were
(Times taken for consumption of 1.0ml aliquots of Na2S2O3 in reaction of peroxydisulfate with iodide):

1.o ml---1:45(min:sec)
2.0ml---3:34
3.0ml---5:58
4.0ml---8:48
5.0ml---11:35

the concentrations of solutions and amounts used:
Na2S2O3 0.20M 1.0ml
KI 0.25M 10.0ml
(NH4)S2O8 0.25M 10.0ml
KNO3 0.25M 27.0ml

I've been working on this for awhile now, and I can't figure out what to do with all of this information that I have. MY lab instructor won't help me..Please help!

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