Kinetics of Chemical Reaction – Iodination of Cyclohexanone

EXPERIMENT 6 Title Kinetics of Chemical reply Iodination of Cyclohexanone induce To determine the value of the evaluate unvarying, k and sword of response, a, b and c, and also to suggest a mechanism which agrees with the roam comparability that has been obtained. Background Theory The basis of the theory of absorbance is as come ups: Io ?????? sample ??????I if Io = I, no absorbance occur Io > I, the sample absorbs certain(prenominal) bill of light wave Io < I, the sample emits certain amount of light of certain wave length. THE HALOGENATION (IODINATION) OF KETONES (CYCLOHEXANONE) This experiment examined the range of iodination of cyclohexanone in an aqueous medium. To increase the amount of ace in the solution, iodine is converted to a more soluble abstruse ion, I3- by the addition of excess iodide ion: I2 + I- ?I3- One of the characteristic responses of ketones is the renewal of a halogen for one of the hydrogen is adj acent to the ketone group. The net reaction is: This reaction has been studied extensively and occurs for a wide multifariousness of ketones. In general, the halogenations of a ketone can be represented as follow: The main evidence for any mechanism is provided by kinetic studies to determine an experimental rate justice.

Following the rate law of chemical kinetics, the differential rate equation for the reaction could be written as follow: Where k = rate constant; a, b,c are the baffles of the reaction of S, I3-, and H+ respectively. I3- ion is the only color species in the reaction mixture, a spectrophotometer can is us ed to tax the assortment in its concentrat! ion, by applying the Beer-Lambert Law Where A= absorbance, ?= molar concentration coefficient, [I3-]= concentration and /= optical path length, that is, the distance travelled by the light through the solution. The ideal wavelength for the measurement of I3- ion concentration is 565nm. lineage from the Beer-Lambert Law equation, where ?-1 /-1...If you want to get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay