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celo753 t1_iwxetoq wrote

Reply to comment by Michkov in If you froze soda for a year, would be still fizz when thawed out? by The_Grand_Canyon

Partially filled would already make your soda at least partially flat, since for your soda to be fizzy the liquid needs to be saturated with carbon dioxide, and having air in the container would make the liquid lose its carbon dioxide to that air.

You could have a high pressure carbon dioxide atmosphere inside your half-filled can, but then you come into a multitude of problems, like the fact that upon opening it would instantly explode like a shaken can of soda, and there would be very little liquid remaining for anyone to drink.

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urzu_seven t1_iwy9bz6 wrote

Soda doesn’t go flat the second it’s opened. You can take some of it out and reclose the bottle. It will still have carbonation in it. But the point is freezing a full bottle of soda and unfreezing it is unlikely to work not because of carbonation change but because the bottle will burst due to expansion of the water.

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