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Reaction Rates: Does Temperature Affect the Iodine Clock Reaction?

CSEF · 2016 Chemistry

Berenice Vega · Pioneer School, Deano, Kern County

Overview

Objectives/Goals The goal was to find out if temperature affected the rate of the iodine clock reaction. Methods/Materials Stopwatch, distilled water, Vitamin C tablets, 2% Iodine tincture, hydrogen peroxide, liquid laundry starch, disposable cups, thermometer, gas stove, an refrigerator. I made two solutions and poured them at the same time while timing the reaction. Three different batches were made one hot, one cold, and one room temperature. Results After many trials to ensure accuracy, it was evident that temperature played a key role in reaction rates. The solutions made with cold water were the slowest to react, while the solutions made with hot water were the fastest to react. Conclusions/Discussion After determining the results of the experiment, it is evident that temperature plays a key role in reaction rates. This supports the idea that you can alter the amount of time it will take for a chemical reaction to react by varying the temperature.

Summary statement

Based on the results, temperature plays a key role in altering the reaction time of the Iodine Clock reaction.

Help received

I performed the Iodine Clock reaction myself, however, I received aid in understanding what happens in the reaction from the website Science Bob.

Competition history

  • CSEF 2016 Chemistry · Entry J0634

Resources

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