Category: Science > Chemistry
Asked by: tammim-ga
List Price: $2.00
06 Apr 2006 16:11 PDT
Expires: 06 May 2006 16:11 PDT
Question ID: 716280
Why do cokes explode in the freezer?
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From: myoarin-ga on 06 Apr 2006 16:39 PDT
Why do any glass bottles containing low or no alcohol explode when frozen? Because when water freezes, it expands. "Bang!" Not always; some bottles may be strong enough to resist, or so shaped that the expansion can occur without breaking the bottle.
From: eugene123-ga on 06 Apr 2006 20:39 PDT
Maybe when the coke freezes, some of the CO2 comes out of solution, and increases the pressure in the can as well. I'd need to look at some data, like the temperature-solubility data for different phases and how much free volume is in Coke cans. That's way more than two dollars of work.
From: chemgeek-ga on 17 Apr 2006 12:14 PDT
Its all about pressure, the coke idea above is right, CO2 is forced out by the freezing liquid. Same thing happens with the air although ive never tried it. As for water and solutions containing high concentrations of water its different ---- the bonding of he H-O-H means that the two hydrogens are attracted to the other two of another molecule creating a ring shape. This means that water expands (for more info ask a geographer about frost shattering). This also means it (ice, solid water) can float.
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