SUMMARY
The addition of dish soap to water before dissolving Alka-Seltzer significantly slows the reaction rate. This occurs because the surfactant in the soap coats the Alka-Seltzer tablet, hindering the interaction between the solid components and water. Alka-Seltzer consists of bicarbonate and citric acid, both of which must dissolve for the reaction to proceed. The detergent likely forms a weak coating over the citric acid, further impeding the reaction.
PREREQUISITES
- Understanding of chemical reactions and reaction rates
- Knowledge of surfactants and their properties
- Familiarity with the composition of Alka-Seltzer (bicarbonate and citric acid)
- Basic principles of solubility and dissolution
NEXT STEPS
- Research the role of surfactants in chemical reactions
- Explore the kinetics of bicarbonate and citric acid reactions
- Investigate the effects of various surfactants on reaction rates
- Learn about the principles of solubility and factors affecting it
USEFUL FOR
Chemistry students, educators, and anyone interested in the effects of surfactants on chemical reaction rates.