In this advanced chemistry project, students will react acetic acid with ethanol to form an ester. They will titrate samples to determine the equilibrium constant of the reaction.
If acetic acid and ethanol are reacted, then the equilibrium constant can be calculated through titration.
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Mix equal volumes of acetic acid and ethanol in a beaker.
Add a few drops of sulfuric acid as a catalyst to the mixture.
Allow the reaction to reach equilibrium over 48 hours.
Take a sample of the reaction mixture for titration.
Add phenolphthalein indicator to the sample.
Titrate with sodium hydroxide solution until the endpoint is reached.
Record the volume of sodium hydroxide used.
Calculate the equilibrium constant using the titration data.
Repeat the titration for accuracy.
Analyze and compare results from multiple trials.
The titration will provide data to calculate the equilibrium constant, indicating the extent of the reaction at equilibrium.
Concentration of reactants
Equilibrium constant
Temperature, Catalyst amount, Reaction time
Use caution when handling acids and bases. Wear appropriate protective gear and work in a well-ventilated area.
Include detailed calculations and chemical equations.
Use graphs to show equilibrium constant determination.
Discuss potential sources of error in the experiment.
It's a chemical reaction between an acid and an alcohol to form an ester.
A catalyst speeds up the reaction without being consumed.
It indicates the ratio of product to reactants at equilibrium, showing reaction extent.
