This project focuses on the relationship between concentration and reaction rate. By changing the concentration of reactants, you’ll observe how it impacts the speed of chemical reactions.
If the concentration of reactants increases, then the reaction rate will increase due to more frequent collisions between particles.
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Prepare three different concentrations of sodium thiosulfate.
Measure equal amounts of hydrochloric acid into each beaker.
Add the sodium thiosulfate to each beaker and start the stopwatch.
Observe the time taken for the reaction to become opaque.
Record the times for each concentration.
Plot the data on a graph to visualize the relationship.
Discuss the results and analyze any patterns.
Clean up the workspace following the experiment.
Increased concentration of sodium thiosulfate is expected to lead to faster reaction times, demonstrating the relationship between concentration and reaction rate.
Concentration of sodium thiosulfate
Rate of reaction (time taken to observe opacity)
Volume of hydrochloric acid, Temperature, Stirring method
Wear safety goggles and gloves when handling chemicals, and work in a well-ventilated area.
Use charts to illustrate reaction times.
Create a poster explaining collision theory.
Discuss how this principle applies in industry.
Demonstrate the experiment during your presentation.
