Graph Iodine Clock Reaction On Paper – Safety eye protection must be worn. Note that since the clock. Graph to determine reaction order. In this experiment you will study the iodate variation of the.
Initially there is no visible reaction, but after a certain period of time the mixed solution suddenly turns dark blue. Keep ap chemistry 21 december 2012 iodine clock reaction lab purpose the purpose of this experiment is to determine the rate law of the iodine clock reaction by using the. Measure rate of reaction with a stop clock. Experiment one kinetics of the iodine.
The iodine clock reaction can be used to illustrate the kinetic order of a reaction, and an overhead projector demonstration was developed three years ago. In this experiment, we will examine the effects of both temperature (cold and hot) and the effect of a catalyst on the rate of the reaction. From this graph we can see that the rate of reaction is directly proportional to the concentration of potassium iodide:
The iodine clock reaction exists in several variations, which each involve iodine species ( iodide ion, free iodine, or iodate ion) and redox reagents in the presence of starch. If this problem is used in a competition then a large display digital clock can heighten the excitement at the final stage. A simplified explanation of the reaction is as follows:
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