Hot Dr Pepper, for example?
In: Chemistry
Fizz occurs in carbonated drinks because carbon dioxide (a gas) is physically trapped between the water molecules that make up the majority of the drink (i.e. They are dissolved). Molecules are always bouncing around, and whenever one bounces towards the top of the drink and escapes into the air, we see a bubble. Temperature itself is a measure of how fast molecules are moving, so subjecting a fizzy drink to a higher temperature causes the molecules to bump around and leave the drink at a faster rate
CO2 has gas state at a very low temperature compared to standard environmental conditions. For this reason it takes either increased pressure, closed system, and/or decreased temperature to keep it mixed in a solute. (Dr. Pepper).
Basically the moment you open your drink it begins evaporation regardless of temperature because the pressure drops and the system is opened.
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In order to make your Dr Pepper fizzy, gaseous CO2 is forced to dissolve into the soda. CO2 doesn’t like to stay dissolved, so it requires a lot of pressure to keep it in there, which is why when you open the bottle you can hear gas escaping and see bubbles rise to the top-that’s CO2 escaping.
When you heat up the soda, you’re causing all the molecules to move around really quickly, so then the CO2 molecules can escape more quickly because they are moving around a lot more. Without CO2, the soda becomes flat
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