The rate at which most chemical reactions occur is dependent on the concentration of the reactants and the temperature. Iodine, which converts to the tri-iodide complex when it reacts with starch, turns dark blue-black. Changing the temperature or concentration changes the rate at which the solution's color changes from clear to blue-black; this allows students to determine the reaction rate, calculate rate law, and determine the activation temperature. The effects of adding a catalyst will also be determined. The kit comes with enough materials for 15 setups.
Chemical Contents:
Copper Sulfate Solution
Potassium Persulfate Solution
Potassium Sulfate Solution
Sodium Chloride Solution
Sodium Iodide Solution
Sodium Thiosulfate Solution
Starch Solution
Additional Materials Required:
400 mL Beakers
Hot Plate
Test Tubes with Stoppers
Stopwatch
Thermometer
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