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Interesting seltzer phenomenon

Interesting seltzer phenomenon - Chemistry Forum

Interesting seltzer phenomenon - Chemistry Forum. Discuss chemical reactions, chemistry.


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  #1  
Old 01-13-2004, 02:13 AM
Alec Oot
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Default Interesting seltzer phenomenon



While at a friends house over the weekend, my friend and I opened a
bottle of seltzer (plain old carbonated water) and it instantly froze
(not the entire thing, but a good portion of it) The bottle had been
outside for a very long time in around 5 degree weather (degrees F)
and had not frozen, but the instant the seal was broken if froze. I
had originally thought that when the carbon dioxide that was dissolved
in the soda turned into a gas it would cool the seltzer quickly and
cause it to freeze, but why wasn't it frozen before I opened it? Just
to make sure that this was not a fluke, I put another un-opened
seltzer bottle outside for 6 hours (again around 5 degrees F). I know
that the bottle was below 32 degrees because ice had formed on it.
Again, the instant I opened it ice quickly began to form. Can someone
please help explain this?
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  #2  
Old 01-13-2004, 02:24 AM
Mark Thorson
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Default Interesting seltzer phenomenon

Alec Oot wrote:


This question has been answered before. Here it is AGAIN:

From: Larry Lippman ([Only registered users see links. ])
Subject: Re: Sub-zero Seltzer!
Newsgroups: net.physics
Date: 1985-12-30 13:32:01 PST



You got it - the reason is the presence of dissolved CO2 causing
freezing point depression; the first reason is NOT a factor other than
higher
pressure causing more CO2 to remain in solution. The quantitative
explanation
for this phenomenon is expressed through Raoult's Law.

==> Larry Lippman @ Recognition Research Corp., Clarence, New York
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  #3  
Old 01-13-2004, 03:44 AM
Repeating Rifle
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Default Interesting seltzer phenomenon

in article [Only registered users see links. ], Mark Thorson at [Only registered users see links. ]
wrote on 1/12/04 6:24 PM:

It is more likely that the liquid was supercpooled and waiting to have ice
form around the seed bubbles when they formed.

Bill

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  #4  
Old 02-01-2004, 11:20 PM
John Savage
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Default Interesting seltzer phenomenon

[Only registered users see links. ] (Alec Oot) writes:

I have seen the phenomenon in a bottle of beer that I'd put into the
freezer for a short time but which I forgot for some hours. When I
gingerly took the bottle from the freezer I was relieved to see that the
contents were clear and liquid. But as I removed the cap the top layer of
beer turned cloudy and this cloudiness progressed downwards at a slow
steady rate until after about 25 seconds it had reached the bottom and the
whole bottle's contents had turned solid and white. It was eerie.
--
John Savage (news address invalid; keep news replies in newsgroup)

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