Iodine Clock Abstract

The purpose of this experiment was to crack the effects of concent ration, temperature and a particle accelerator on the rove of the iodine-hydrogen peroxide reaction and to as well up determine the prise law expression for the reaction. Mixture #1 which was make up of 10ml of KI, 15ml of Buffer, 5ml of Na2S2O3 and 15ml of H2O was prepared in an Erlenmeyer flaskful and terce drops of 3% starch (indicator) was added and the inter pleatture was stirred cautiously. The temperature (19.70C), pH (4.78) of the conflate was carefully obtained. An accu pose measurement of 5ml of H2O2 was then added to the smorgasbord and the mix turned from a clear solution to a racy solution and then finally black. The reaction measure out (156.5s) (i.e prison term taken from solution to turn from clear to blue) of the mix was carefully obtained. The comparable process was applied to mix #2, #3 and #4 precisely with contrary volumes of compounds and the temperature, pH and reaction date w as similarly carefully noted. For miscellanea #5, the composition from previous mixtures remained the aforementioned(prenominal) but 5ml of Mo(VI), a catalyst, was added. The temperature was duly noted and the reaction time (54.5s) was as well recorded. For mixture #6, the composition also remained the same but the temperature of the mixture was lowered to 100C and the reaction time (309s) was noted.

I realized that that in the presence of a catalyst, the reaction occurred at a high-velocity rate and when the temperature was decreased, the reaction rate was doubled. The submerging of the ions in the compounds was also calculated for ev ery mixture with the dilution grammatical c! onstruction (C1V1=C2V2) and the reaction rate was also calculated by study a ratio of the concentration of blue starch multifactorial (S2032-) and reaction time. The rate constant was also calculated for mixtures #1 - #4. The order of the different reactions was calculated by substituting know values for rate and concentration into the rate law liberal rise to an general expression of 0.010[H2O2]1[I-]1[H+]0. There were a some errors that occurred during the...If you want to suck a full essay, order it on our website: BestEssayCheap.com

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