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Eiji Shimada

Correlation between concentration of sugar water and intensity of Alka-Seltzer carbon dioxide out-gassing. - Sugar enhances out-gassing -. Eiji Shimada. 15 December 2012. sugar enhances out-gassing. Three tablets of grape flavor Mentos were dropped into;. More bubbling.

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Eiji Shimada

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  1. Correlation between concentration of sugar water and intensity of Alka-Seltzer carbon dioxide out-gassing - Sugar enhances out-gassing - Eiji Shimada 15 December 2012

  2. sugar enhances out-gassing Three tablets of grape flavor Mentos were dropped into; More bubbling 150mL of bottled soft water no sugar Then One tablet of Alka-Seltzer was added 150mL of bottled soft water 15g of sugar Then One tablet of Alka-Seltzer was added Grid spacing is 0.5cm

  3. Method • 1 150ml sugar water with different concentration (0g, 7.5g, and 15g) • (granulated sugar) • carbonate sugar water with Alka-Seltzer (1, 2, and 3 tablets) • drop 3 Mentos tablets, 10 seconds then photograph bubbles Environmental conditions Temperature: 19.7 C Atmospheric pressure: 1016hPa

  4. Alka-Seltzer Granulated sugar

  5. Results • Higher sugar concentration enhances out-gassing • Increased number of Alka-Seltzer tablets was not a factor Discussion • Under microgravity, bubbles may surround tablets and out-gassing may be decreased

  6. References • Shimada E. 2007http://www25.tok2.com/home/shimada/clearlake/projects/MentosGeyser/2007MentosGeyserNote.pdf • Shimada M. 2008http://www25.tok2.com/home/shimada/clearlake/projects/MentosGeyser/080802bubble_size_distribution.pdf • Shimada Y. 2009http://www25.tok2.com/home/shimada/clearlake/projects/MentosGeyser/090216Size_distribution_of_CO2_bubble.pdf

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