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Respond to nils dot lindgren at drchips dot se
"Ian Hoare" > skrev i meddelandet
...
> Salut/Hi Mark Lipton,
>
> le/on Fri, 28 Jan 2005 16:23:08 -0800, tu disais/you said:-
>
>
>>> Keep it in the coldest part of the fridge overnight and you'll have
>>> plenty of bubbles the following afternoon or evening.
>>>
>>
>>Sorry, but your Chem 101 is a bit rusty it would seem. The issue is the
>>solubility of carbonic acid (hydrated CO2) in water-ethanol. Solubility
>>does not generally increase at lower temperature; quite the contrary, in
>>fact.
>
> Mark!!!! Is it the addition of ethanol that changes things? Because the
> solubility of gases in water (though I thought it was in all solvents)
> does
> increase with falling temperatures. Otherwise you wouldn't get gas bubbles
> occurring in water when it is heated - long before boiling point.
>
> It's almost equal pleasure to be able to read you here again and to be
> able
> to query a question of chemistry!
>
>> Additionally, if you should reach a critical point (freezing
>>point, in this case) you would degas the solution as solubility goes to
>>zero at all critical points.
>
> Interesting... that I didn't know.
In my foolish youth (about 9, IŽd say) I tried to make fizzy popsicles using
some sort of sodapop (equivalent of SevenUp) and freezing it in our fridge.
I found to my considerable disappointment that the popsicles contained no
discernable fizz whatsoever. So practice is true to theory.
Cheers!
Nils Gustaf
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