The Effect of Temperature and Ionic Strength on the Oxidation of Iodide by Iron(III): A Clock Reaction Kinetic Study (CROSBI ID 177578)
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Bauer, Jurica ; Tomišić, Vladislav ; Vrkljan, Petar
engleski
The Effect of Temperature and Ionic Strength on the Oxidation of Iodide by Iron(III): A Clock Reaction Kinetic Study
A laboratory exercise has recently been reported in which the students use the initial rates method based on the clock reaction approach to deduce the rate law and propose a reaction mechanism for the oxidation of iodide by iron(III) ions. The same approach is used in the exercise proposed herein ; the students determine the dependence of the reaction rate on ionic strength and temperature in a straightforward manner. The previously proposed mechanism is further supported by the results, the rate determining step is identified, and the activation parameters Ea, ΔH and ΔS are determined for the overall reaction of the first two steps of the mechanism. The significance of such kinetic studies in elaborating reaction mechanisms is clearly demonstrated to the students.
Upper Division Undergraduate ; High School ; Physical Chemistry ; Inorganic Chemistry ; Laboratory Instruction ; Hands On Learning ; Kinetics ; Mechanisms of Reactions
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