Objective
Investigate how temperature affects the rate of a chemical reaction.
Materials
- Hydrogen peroxide (H2O2)
- Potassium iodide (KI)
- Graduated cylinder
- Beakers
- Thermometers
- Ice bath and hot plate
- Stopwatch
- Notebook for observations
Instructions
- Dissolve potassium iodide in water to create a solution.
- Measure a specific volume of hydrogen peroxide in separate beakers.
- Heat or cool the beakers to different temperatures using an ice bath or hot plate.
- Record the temperature of each solution before mixing.
- Add the potassium iodide solution to the hydrogen peroxide and start the stopwatch.
- Observe the reaction and record the time it takes for the reaction to complete at each temperature.
- Compare the reaction rates at different temperatures and draw conclusions about the effect of temperature on the reaction rate.