Why does alcohol instantly kill the fizzy bubbles in soda/pop when they are mixed?

Why is it then when I rapidly pour diet coke into a glass with ice it fizzes up and then as soon as I pour alcohol into it the bubbles all disappear?

note: Glass has ice in it. Diet coke is poured from a plastic 2L bottle and it has been refrigerated. 

3 Answers

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  • 1 month ago

    Alcohol reduces the tension in any liquid and therefore the bubbles that would usually dissipate slowly they pop instantaneously and now you have a flat beverage

  • CB
    Lv 7
    1 month ago

    "When you add alcohol to the soda you are drastically changing the solubility of CO2 in the soda, causing most of it to remain in solution.

    Based on the article below, CO2 is way more soluble in ethanol than in water, likely leading to the effect you saw:

    https://www.sciencedirect.com/science/article/pii/...

    Based on Figure 6 you can see that at low concentrations of alcohol (probably about the alcohol percentage of your drink) the solubility of CO2 in the mixture as governed by henry's law is at its maximum"

  • 1 month ago

    maybe its the ingredients in the alcohol that does that

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