Alka Seltzer and Water Experiment
by Drew Greene and Suhas Narayanan

Starting Facts:

-Alka-Seltzer is made of sodium bicarbonate, potassium bicarbonate, and anhydrous citric acid. Baking soda is a form of sodium bicarbonate and vinegar is a form of citric acid.
-Alka-Seltzer dissolved in water becomes sodium acteylsalicylate, sodium citrate and sodium hydrogen carbonate.
-When in water, Alka-Seltzer fizzes.
-This fizzing is the same that can be seen when baking soda is mixed with vinegar.

Video

Graph of the Experiment

When Alka-Seltzer and water were combined, the temperature decreased. This was an endothermic reaction because energy was absorbed. In this experiment, the maximum temperature was 31 and the minimum was 30.5.

Breakdown of the Reaction

C6H8O7 + 3NaHCO3 → 3H2O + 3CO2 + Na3C6H5 O7
Citric acid, baking soda-> water, carbon dioxide, sodium citrate

Carbon- 9 -> Carbon- 9
Hydrogen- 11 -> Hydrogen- 11
Sodium-3 -> Sodium-3

Oxygen- 16| -> Oxygen-16

Citations
http://www.alkaseltzer.ie/en/about-alka-seltzer/
http://goddard.littletonpublicschools.net/
http://science.howstuffworks.com/

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